Noakhali Science and Technology University Grading System 2026: GPA & CGPA Guide

Quick answer: Noakhali Science and Technology University (NSTU) grades on a 4.00 scale. An A+ is worth 4.00 grade points, an A is worth 3.75, and the scale runs down through B+, B, B-, C+, C and D to F, which is worth 0.00. You pass a course at 40 percent marks, which earns a D worth 2.00 grade points. Anything below 40 percent is an F. Your semester GPA is the credit-weighted average of your grade points, not a simple average of your letter grades, and your CGPA is the same calculation stretched across every semester you have completed.

If that is all you needed, you can stop here. The rest of this guide walks through the full table, the exact formula, three worked examples with every division shown, the common mistakes that cost NSTU students the most marks on paper, and an honest section on which NSTU rules are published and which are not. That last part matters, because NSTU does not publish its grading ordinance or its retake and probation rules on its public website, and any guide that states those rules as fact is guessing. Where this guide cannot verify an NSTU rule, it says so and tells you where to confirm it.

Check Your NSTU GPA With the Calculator

The fastest way to check a semester GPA is to run your own numbers through a calculator rather than trusting a rough estimate. NSTU has no dedicated calculator page on this site, so use the homepage calculator, which runs on the UGC 4.00 scale described in this guide. Enter each course, its credit hours and its letter grade, and the calculator returns the credit-weighted result. The worked examples below use the same scale, so you can cross-check the calculator against them by hand.

One honest caption before you start: the homepage calculator applies the national UGC scale. That scale matches the grading table published for NSTU by Scholaro and the uniform scale the UGC recommended for all public universities, but NSTU itself has not published its own grading table on nstu.edu.bd. If your department hands you a grade sheet that differs from the table below, your department’s sheet wins. Use the calculator to estimate, and your official transcript to settle any dispute.

The NSTU Grading Table: The UGC 4.00 Scale

Bangladesh’s University Grants Commission recommended a uniform grading system for all public and private universities with effect from the 2006-2007 session, and public universities across the country publish the same table. The University of Rajshahi publishes it on its official site as the UGC system, and Scholaro lists the identical scale for NSTU specifically. That is the strongest public evidence available for what NSTU uses, and it is the table this guide works from.

Three things about this table trip students up every semester. First, the boundaries are sharp: 79 percent is an A worth 3.75, while 80 percent is an A+ worth 4.00, so a single mark can move a course by 0.25 grade points. Second, there is no C- grade in the UGC table, even though one database listing for NSTU shows a stray C- row overlapping the D band; treat D as the lowest passing grade. Third, the scale stops at D for passing grades. There is no E grade to soften a fail. Below 40 percent, the course is an F, and as the F-denominator example below shows, that F keeps hurting until the course is cleared.

It is also worth separating this 4.00 university scale from the 5.00 scale you knew at school. SSC and HSC results in Bangladesh run on a 5.00 GPA scale, where A+ means 5.00. University results run on the 4.00 CGPA scale, where A+ means 4.00. Students who carry the school scale into university either panic when they see a 3.50, thinking it is a weak result, or tell relatives they have a 5.00-scale result when they do not. A 3.50 at NSTU is an A- average. It is a strong result, and it is measured out of 4.00, not 5.00.

How NSTU Marks Are Split: What Is Verified and What Is Not

Here is where honesty matters more than completeness. NSTU’s public website describes its programmes, faculties and admissions, but it does not publish an academic ordinance, a grading policy document, or a semester rulebook that a student can download and check. Searches of nstu.edu.bd for grading regulations, retake rules and probation rules turn up nothing usable. That absence is itself the finding, and it shapes everything else in this section.

What students report, rather than what the university publishes, is a split of roughly 30 percent in-course marks and 70 percent final examination marks in at least some departments. A 2017 student account from NSTU’s Computer Science and Telecommunication Engineering department describes 30 percent for class attendance, tutorials and assignments and 70 percent for the final exam, with most theory courses carrying 3 credits and labs carrying 0.75 or 1.5 credits. That is a useful picture of how a semester feels, but it is one department’s account from several years ago, not a university rule. Do not quote it to a teacher as policy. Confirm the split for your own course from your course outline on the first day of class, because departments and individual teachers vary it.

The same caution applies to attendance. Many Bangladeshi public universities tie a portion of in-course marks to attendance, and some bar students below a threshold from sitting the final exam, but no NSTU attendance threshold could be verified from a published source for this guide. If attendance affects your grade, your department office can tell you the exact rule for your session. The section near the end of this guide lists every unverified rule in one place, with the office to ask.

How NSTU Semesters Are Structured

Most NSTU undergraduate degrees run for four years, divided into eight semesters, with two semesters per academic year. A student account from NSTU’s Computer Science and Telecommunication Engineering department describes a four-year calendar of eight semesters and eight final examinations, with most semesters carrying more than 20 credits, and a CSTE degree totalling 172 credits. That credit total is specific to one department’s curriculum and will differ in other departments, but the shape is typical: a heavy load each semester, theory courses of around 3 credits each, and labs worth 0.75 or 1.5 credits alongside them.

Understanding the shape helps you read your GPA honestly. A semester with 21 credits and a semester with 15 credits are not equal contributors to your CGPA, even though both appear as one line on a result sheet. The 21-credit semester carries 40 percent more weight. Students sometimes wonder why a strong semester barely moved their CGPA, and the answer is usually that the strong semester was a light one, or that several heavier semesters came before it. The CGPA formula does not care about semesters; it cares about credits.

NSTU’s scale also shows up in its academic breadth. The university runs 31 departments and two institutes across six faculties, from Engineering and Technology through Science, Social Science and Humanities, Education Sciences, Law and Biological Sciences, with more than 7,500 students. A grading guide has to serve a pharmacy student and a law student at once, which is another reason the national UGC table is the right anchor: it is the one scale every NSTU faculty shares. Department rules may differ, but the grade points do not.

Admission context matters for new students reading this guide. NSTU admits first-year honours students through the GST cluster admission test, not through a separate NSTU test, so the students arriving each year come through the same national gateway as the other science and technology universities. If you are a new admit still thinking in HSC terms, the first adjustment is the scale itself: your HSC GPA out of 5.00 stays on your admission record, but from your first NSTU semester onward, everything is measured out of 4.00.

How to Calculate Your Semester GPA, Step by Step

GPA calculation has exactly four steps, and skipping any one of them is how errors creep in. Work through them in order, with your grade sheet in front of you.

1. List every course you took in the semester, with its credit hours and its letter grade. Include failed courses. Leave out nothing that carries a grade point, and leave out anything that does not, such as a non-credit course.
2. Convert each letter grade to its grade point using the table above. An A is 3.75, not 4.00. A B+ is 3.25, not 3.30. The quarter-point steps are the whole point of the UGC scale, and rounding them to whole numbers is the fastest way to get a wrong GPA.
3. Multiply each course’s grade point by its credit hours. This gives the grade points earned for that course. A 3-credit A earns 11.25 points. A 1.5-credit A+ earns 6.00 points.
4. Add up all the grade points earned, add up all the credit hours, and divide the first total by the second. Round the result to two decimal places, rounding half up. That quotient is your semester GPA.

Notice what step 3 does. It gives heavier courses more influence. A 3-credit course counts twice as much as a 1.5-credit lab, even if both grades look equally good on the transcript. That weighting is fair, because the heavier course represents twice the work, but it means a weak grade in a 3-credit theory course damages your GPA far more than a weak grade in a short lab.

The GPA and CGPA Formulas

The formula for one semester is:

Semester GPA = (sum of grade point x credit hours for every course) / (total credit hours)

The formula for your whole degree so far is the same idea, extended:

CGPA = (sum of grade points earned in all semesters) / (total credit hours in all semesters)

There is a shortcut for CGPA that gives the identical answer. Multiply each semester’s GPA by that semester’s credit hours, add those products, and divide by the total credit hours across all semesters. Both routes are the same arithmetic, just grouped differently. The shortcut is handy when you only remember your semester GPAs and not every individual course grade, but it only works if every semester GPA you feed in is itself correct. One wrong semester GPA, carried into the shortcut, corrupts the CGPA silently, so check each semester first.

One more formula note. Some students compute CGPA by averaging their semester GPAs directly, adding them up and dividing by the number of semesters. That is wrong whenever semesters carry different credit loads, which is nearly always. A 21-credit semester must count more than a 15-credit semester. The worked CGPA example below shows the difference in numbers.

Worked Examples With Exact Arithmetic

Every division in this section is shown in full. Check any of them on a phone calculator and you will get the same answer.

Example 1: A Semester GPA

Take a first-year NSTU student with five courses in one semester: a 3-credit programming course graded A, a 3-credit mathematics course graded A-, a 3-credit physics course graded B+, a 3-credit English course graded B, and a 1.5-credit lab graded A+.

• Programming: 3 credits x 3.75 = 11.25 points
• Mathematics: 3 credits x 3.50 = 10.50 points
• Physics: 3 credits x 3.25 = 9.75 points
• English: 3 credits x 3.00 = 9.00 points
• Lab: 1.5 credits x 4.00 = 6.00 points

Total grade points: 11.25 + 10.50 + 9.75 + 9.00 + 6.00 = 46.50. Total credits: 3 + 3 + 3 + 3 + 1.5 = 13.5. Semester GPA = 46.50 / 13.5 = 3.4444, which rounds to 3.44.

Note how the lab’s A+ barely moves the result, because it carries only 1.5 credits, while the B in English drags it down, because English carries a full 3 credits. That is credit weighting doing its job.

Example 2: A CGPA Across Two Semesters

Suppose the same student finishes semester 1 with a GPA of 3.40 over 20 credits, and semester 2 with a GPA of 3.62 over 21 credits. The wrong way is to average 3.40 and 3.62, giving 3.51 by luck in this case, but only because the credit loads are close. The right way weights each semester:

• Semester 1: 20 credits x 3.40 = 68.00 points
• Semester 2: 21 credits x 3.62 = 76.02 points

Total points: 68.00 + 76.02 = 144.02. Total credits: 20 + 21 = 41. CGPA = 144.02 / 41 = 3.51268, which rounds to 3.51.

If the credit loads had been further apart, say 15 credits in semester 1 and 24 in semester 2, the plain average of the two GPAs would have been visibly wrong. Always weight by credits.

Example 3: What a Target CGPA Really Requires

A third-year student has completed 60 credits with a CGPA of 3.20 and wants to reach 3.50 after one more 20-credit semester. Is it possible? Work it out before you promise yourself it is.

Points earned so far: 60 x 3.20 = 192.00. Points needed for a 3.50 over 80 credits: 3.50 x 80 = 280.00. Points still needed: 280.00 – 192.00 = 88.00, from 20 credits, which is 88.00 / 20 = 4.40 grade points per credit. The scale stops at 4.00, so the target is impossible in one semester.

The best case is still worth knowing. Straight A+ grades in all 20 credits would earn 80.00 points, giving (192.00 + 80.00) / 80 = 272.00 / 80 = 3.40. So the honest goal after one strong semester is 3.40, and 3.50 becomes reachable only over two good semesters. Students who set impossible targets burn out chasing them. Students who know the ceiling plan for two semesters and hit it.

GPA vs CGPA: The Difference in One Paragraph

GPA describes one semester. CGPA describes your whole degree to date. Your GPA can jump sharply from one semester to the next, because it only covers 15 to 22 credits. Your CGPA moves slowly, because every new semester is diluted by all the credits that came before it. That is why a single bad semester in first year still shows up in your final-year CGPA, and why a single brilliant semester in final year cannot erase three average years. Employers, scholarship committees and foreign universities ask for CGPA because it is the stable number. You should track both: GPA tells you how this semester went, CGPA tells you where you stand overall.

Reading Your NSTU Result Sheet

Your result sheet is the only document that settles an argument about your GPA, so learn to read it properly. Each row should show a course name or code, the credit hours for that course, and the letter grade you earned. Some sheets also show the grade point beside the letter grade. If yours shows only letter grades, convert them with the table in this guide and recompute the semester yourself, using the four steps above. If your recomputation disagrees with the printed GPA, the first suspects are a misread grade point, usually A taken as 4.00 instead of 3.75, a lab credit misread as 3 instead of 1.5, or a failed course left out of the divisor.

Watch the terminology too. Some departments and documents say SGPA, meaning semester GPA, and some say GPA for the same thing. Both refer to one semester’s credit-weighted average. CGPA always means the cumulative figure across all completed semesters. When a scholarship form or a job application asks for your CGPA, it wants the cumulative number, not your best semester. When a teacher talks about your GPA in a single course meeting, they usually mean the current semester.

Finally, keep every result sheet. Transcripts get reissued, online portals change, and a grade that was corrected after a review does not always propagate to every copy of your record. Students who keep their own semester-by-semester spreadsheet, with credits and grades, can prove their CGPA from their own records at any point, and can spot a transcription error the semester it happens rather than in final year when it is hardest to fix. The formula in this guide plus a simple spreadsheet is all the tooling you need.

Common Mistakes That Cost Students Real Marks

Mistake 1: The Plain-Average Trap

The most common GPA error in Bangladesh is averaging letter grades as if credits did not exist. Take three courses: a 1.5-credit lab graded A+, a 3-credit theory course graded B, and a 3-credit theory course graded C.

• Lab: 1.5 credits x 4.00 = 6.00 points
• Theory 1: 3 credits x 3.00 = 9.00 points
• Theory 2: 3 credits x 2.25 = 6.75 points

Correct GPA: (6.00 + 9.00 + 6.75) / 7.5 = 21.75 / 7.5 = 2.90. The plain-average method adds the three grade points and divides by three: (4.00 + 3.00 + 2.25) / 3 = 9.25 / 3 = 3.08. That overstates the result by 0.18, because it gives the little lab the same weight as a full theory course. A student who reports 3.08 when the transcript says 2.90 will be caught out the moment anyone checks, and the gap only widens with more courses.

Mistake 2: The F-Denominator Trap

The second costly error is dropping a failed course out of the calculation entirely, as if an F simply did not happen. Take four 3-credit courses graded A, B+, B and F.

• Course 1: 3 credits x 3.75 = 11.25 points
• Course 2: 3 credits x 3.25 = 9.75 points
• Course 3: 3 credits x 3.00 = 9.00 points
• Course 4: 3 credits x 0.00 = 0.00 points

Correct GPA: 30.00 / 12 = 2.50. The trap version drops the failed course from the divisor: 30.00 / 9 = 3.33. That overstates the result by 0.83, nearly a full grade band. An F contributes zero points, but its credits stay in the denominator. That is exactly why a single F hurts so much: it adds nothing on top and still counts underneath. Until the course is retaken and cleared under your department’s rules, the honest GPA is 2.50, not 3.33.

Mistake 3: Mixing the 5.00 School Scale Into University Results

Students fresh from HSC sometimes convert university grades as if the scale still ran to 5.00, or quote a university CGPA of 3.75 as if it were a school GPA. It is not. A university CGPA of 3.75 out of 4.00 is an A average, a first-class result, and one of the strongest outcomes a student can hold. Judged against a 5.00 scale it looks middling, which is a category error, not a weak result. Always state the scale: “CGPA 3.75 out of 4.00”. The four words “out of 4.00” prevent the misunderstanding entirely.

Mistake 4: Rounding Too Early

Rounding each course’s grade points before adding them, or rounding a semester GPA before feeding it into a CGPA, introduces small errors that compound. Keep full precision through every step and round only the final answer to two decimals. In Example 1 above, the exact quotient was 3.4444 before rounding to 3.44. Rounding the intermediate products would have given a slightly different, and slightly wrong, answer.

NSTU vs the Other Science and Technology Universities

Bangladesh has a whole family of public science and technology universities with similar names, and students, parents and even employers mix them up. NSTU is Noakhali Science and Technology University, at Sonapur in Noakhali district, on the southern coast. It is not Jashore University of Science and Technology (JUST) in Jashore, not Pabna University of Science and Technology (PUST) in Pabna, not Hajee Mohammad Danesh Science and Technology University (HSTU) in Dinajpur, not Mawlana Bhashani Science and Technology University (MBSTU) in Tangail, and not Shahjalal University of Science and Technology (SUST) in Sylhet. Each is a separate public university with its own campus, administration and admission process, and each admits through the GST cluster system in recent years.

The confusion matters for grading because students search for one university’s rules and apply another’s. If you are reading a grading guide, check the university name in the title before trusting a single number in it. For comparison, the grading guides for two of the sister universities on this site use the same UGC 4.00 scale, because the scale is national: see the JUST grading guide and the PUST grading guide. The scale travels across universities, but retake rules, probation rules and department practices do not, so never import another university’s rulebook into NSTU.

For a sense of how other Bangladeshi institutions present the same national scale, this site also carries guides for the Islamic University of Technology, the Asian University for Women, and the Central University of Science and Technology. They are useful background reading, not substitutes for NSTU’s own rules.

Retakes, Improvement, Probation and Graduation: What Is Verified and What Is Not

This is the section other guides fake, so read it carefully. The following NSTU rules could not be verified from any published source during research for this guide, because NSTU does not publish its academic ordinance on its public website:

• Retake and improvement rules (UNVERIFIED): whether a retaken course replaces the old grade in the CGPA or averages with it, whether improvement exams are limited to certain grades, how many attempts are allowed, and whether a retake grade is capped. Other Bangladeshi universities differ on every one of these points, so do not assume NSTU follows any particular pattern.
• Probation and dismissal rules (UNVERIFIED): whether NSTU places students on probation below a CGPA threshold, what that threshold is, and how many semesters a student gets to recover.
• Graduation CGPA floor (UNVERIFIED): the minimum CGPA NSTU requires to award a degree. Some Bangladeshi universities set this at 2.00, others at 2.50, and the figure cannot be stated for NSTU without a published source.
• Dean’s List or merit recognition (UNVERIFIED): whether NSTU publishes a Dean’s List each semester and what GPA qualifies.
• Attendance rules (UNVERIFIED): any minimum attendance percentage and its effect on grades or exam eligibility.
• Withdrawn and incomplete grades (UNVERIFIED): whether NSTU uses W or I grades and how they enter the CGPA.

What you can verify nationally, and what is safe to use as background, is the class convention used across Bangladeshi public recruitment: a CGPA of 3.00 to 4.00 counts as first class, 2.25 to 2.99 as second class, and 2.00 to 2.24 as third class. That convention governs BCS and government bank eligibility, and it is the reason 3.00 is the most important threshold in a Bangladeshi student’s degree. It is a national convention, not an NSTU regulation, and this guide labels it as such rather than dressing it up as an NSTU rule.

For every unverified item above, the route to a real answer is the same: your department office first, then the Controller of Examinations office through the official university website at nstu.edu.bd. Ask in writing, keep the reply, and check it against your session’s rules, because regulations change between sessions and seniors often repeat rules that no longer apply. If you are planning a retake, confirm the rule before the exam, not after, because the treatment of the old grade decides whether the retake is worth the effort at all.

Tips to Raise Your NSTU CGPA

CGPA advice usually stops at “study harder”, which helps nobody. The arithmetic in this guide points to sharper moves. First, protect your heavy courses. A 3-credit course moves your GPA twice as much as a 1.5-credit lab, so an extra hour spent lifting a 3-credit B to an A- is worth more than the same hour spent polishing a lab that is already an A. Second, fix F grades before chasing A+ grades. An F contributes zero points while its credits sit in the denominator, so clearing one failed 3-credit course can lift a GPA more than improving two passed courses by a band each. Third, plan in two-semester blocks. Because CGPA is diluted by past credits, a single semester rarely moves it by more than a tenth or two; the target example above shows a 3.20 becoming at best 3.40 in one semester, and students who accept that pace plan better than students who expect a jump. Fourth, guard the band boundaries. The difference between 79 and 80 percent is 0.25 grade points in a course, which is larger than the difference between most study tips. If you are near a boundary, a small push in that one course pays more than a general push everywhere. Fifth, keep your own spreadsheet. Record every course, credit and grade, and recompute your GPA each semester with the formula in this guide. Students who track their own numbers catch transcript errors early, and transcript errors do happen.

Frequently Asked Questions

Is NSTU graded on a 4.00 or a 5.00 scale?

On a 4.00 scale. The 5.00 scale belongs to SSC and HSC. At NSTU, as at other Bangladeshi public universities, A+ is 4.00, A is 3.75, and the scale runs down to F at 0.00. Whenever you quote your result, say “out of 4.00” so nobody mistakes it for a school GPA.

What is the pass mark at NSTU?

40 percent marks, which earns a D worth 2.00 grade points. Anything below 40 percent is an F worth 0.00, and the failed course’s credits stay in your GPA denominator until the course is cleared under your department’s retake rules.

What CGPA counts as first class?

Under the national convention used for government recruitment in Bangladesh, a CGPA of 3.00 to 4.00 out of 4.00 counts as first class, 2.25 to 2.99 as second class, and 2.00 to 2.24 as third class. This is the threshold BCS and government bank circulars use. It is a national convention, not a rule NSTU itself has published, but it is the number employers will apply to your degree.

Does an F grade count in my CGPA?

Yes. An F adds 0.00 points to the numerator and still adds its full credits to the denominator. Dropping it from the divisor is the F-denominator trap, and it overstates the GPA by a wide margin, as the worked example above shows: 2.50 honestly, 3.33 if you cheat the denominator. Only a retake handled under your department’s rules can change how that course counts.

Can I retake or improve a course at NSTU?

Probably, but the exact rule is UNVERIFIED. NSTU has not published its retake and improvement regulations on its public website, so this guide cannot state whether a new grade replaces the old one, whether retakes are capped, or how many attempts are allowed. Confirm the rule with your department office and the Controller of Examinations before you sit a retake, because the treatment of the old grade decides whether the retake helps your CGPA at all.

Is NSTU the same as JUST, PUST, HSTU or SUST?

No. NSTU is Noakhali Science and Technology University in Sonapur, Noakhali. JUST is in Jashore, PUST is in Pabna, HSTU is in Dinajpur, MBSTU is in Tangail, and SUST is in Sylhet. They are separate public universities that share the national UGC grading scale but run their own administrations, departments and academic rules. Never apply one university’s retake or probation rule to another.

How do I convert my NSTU CGPA to a percentage?

There is no official NSTU CGPA-to-percentage conversion, and a straight multiplication misleads. Multiplying a CGPA by 25 gives a rough figure sometimes used informally, so a 3.50 becomes about 87.5 percent, but that number does not correspond to any marks band, because the UGC table maps marks bands to grade points in steps, not in a straight line. If an employer or a foreign university asks for a percentage, give them your CGPA out of 4.00 together with the grading table in this guide, and let their own conversion apply. If a form demands a single percentage, use the informal conversion only with a note that it is an approximation, never as an official figure.

What to Do Next

Start with your own numbers. Pull your latest grade sheet, convert each letter grade with the table above, multiply by credits, and divide. If the result surprises you, check the two traps first: did you average grades without weighting by credits, and did you leave a failed course out of the denominator? Both errors flatter the result, and both are common. Then check the rules that matter for your next decision. If you are considering a retake, get the department’s retake rule in writing before the exam. If you are close to a class boundary, put your effort into the heavy course nearest the next band. And if any number in this guide conflicts with your official transcript or your department’s grade sheet, trust the official document and treat this guide as the estimate it is.

NSTU is a young coastal university, founded by act in 2001 and teaching since 2006, with 31 departments and two institutes on its Sonapur campus. Its students deserve a grading guide that is specific to their university, exact in its arithmetic, and honest about what is published and what is not. That is what this guide set out to be. Use the calculator, keep your own spreadsheet, and confirm the unpublished rules with the people who actually set them.

Sources

Grading scale: the UGC uniform grading system as published by the University of Rajshahi at ru.ac.bd, and the NSTU-specific scale listed by Scholaro at scholaro.com. University facts, faculties, departments and student numbers: the official NSTU website at nstu.edu.bd. NSTU history, foundation dates and campus details: NSTU’s official about page and corroborating encyclopaedia entries. Retake, probation, graduation and attendance rules: no published NSTU source was found, and those items are marked UNVERIFIED in this guide pending confirmation from the Controller of Examinations.