Iran vs Singapore Grading System

How does the Iran grading system work?

Iranian universities use a 0–20 scale where 10 is the minimum pass. Scores of 17+ are genuinely excellent.

How does the Singapore grading system work?

NUS and NTU use a 5.0 CAP scale. SMU uses a 4.0 GPA. Singaporean degrees are highly regarded internationally.

⚠️ NUS/NTU use 5.0 CAP, SMU uses 4.0 GPA. Check which university issued your degree.

Do Iran and Singapore mark to the same standard?

No — and it is the difference in marking culture, not the arithmetic, that makes a direct comparison mislead. Here is how each country actually uses its own scale.

What a good grade means in Iran

As in every 20-point system, the top of the scale is largely unused: a 17 is an excellent result and marks above 18 are very rare, so a moadel of 15 represents a strong degree rather than the 75% it becomes under arithmetic conversion. Iranian universities — Sharif, Tehran and Amirkabir in particular — are well known to admissions committees in engineering and the sciences, and a strong moadel from those institutions is read in context rather than at face value.

What a good grade means in Singapore

Singaporean degrees are highly regarded internationally, and the grading is demanding: NUS and NTU run bell-curve moderation, so grades reflect standing within a strong cohort rather than an absolute mark. That makes a CAP of 4.0 a genuinely good result even though, mapped to US letters, it sits at a B+ rather than an A. The honours class is the signal to lead with abroad, because Highest Distinction and Distinction are understood in Commonwealth terms in a way a raw 5.0-scale number is not.

Will a grade from Iran get you into Singapore?

Singapore universities typically ask for 3.50 / 5 for a taught master's — a one-to-two-year postgraduate degree made mostly of classes. On Iran's scale that is roughly 13.3–14.6 / 20 (Good). Singapore states this as an honours class rather than a CAP figure — Honours (Merit) / Second Class and above, which begins at 3.5 on the 5.0 CAP scale modelled here. NTU's published bar is looser still ("at least a good Bachelor degree"). Both universities stress that meeting the minimum does not imply admission, because selection is competitive against the rest of the applicant pool.

NUS Faculty of Arts & Social Sciences — graduate coursework admission requirements · checked 2026-07-25 · the figure in your own terms is a double conversion, so it is a range. how this is worked out

Excellent (17–20) → approximately 4.0 GPA.

What goes wrong converting grades from Iran to Singapore?

The pass marks differ — 10.0 in Iran against 2.00 in Singapore — so the two scales have different usable ranges and the middle of one is not the middle of the other.

Mistakes specific to Iran grades

• Multiplying the 20-point average by five. A 15/20 is a strong Iranian degree; "75%" does not convey that in US terms.
• Assuming the pass mark is always 10. Some institutions pass at 12 and postgraduate thresholds are higher.
• Underestimating document lead times. Obtaining and legalising Iranian transcripts for use abroad frequently takes longer than applicants expect.

What should you do next, applying from Iran to Singapore?

1. Check the course, not the country. Entry requirements are set per programme and revised every cycle. The 3.50 / 5 above is the typical bar, not a guarantee — selective courses ask for more.
2. Check whether an evaluation is even required. Unlike the US and Canada, Singapore universities commonly assess foreign transcripts in-house. Confirm on the course page before paying for a report you may not need.
3. Get your documents moving early. Universities normally require your transcript sent directly by your institution rather than as a copy from you, which takes longer than most applicants expect.
4. Read both systems in full. How Iran grading works · How Singapore grading works

What do these grading terms mean?

Percentage scale

A 0–100 marking scale — but the numbers are not comparable across countries: 70% is an outstanding result in the UK and a modest one in India.

GPA (Grade Point Average)

The US way of expressing an overall grade, on a 0–4.0 scale where 4.0 is the top — so a 4.0 is roughly what a 90–100% or a First Class would be elsewhere.

Grade compression

Where a marking culture rarely uses the top of its own scale, so the highest grades anyone actually earns sit well below the theoretical maximum.

Transcript

The official document from your university listing every subject you took and the grade you got — not the same as your degree certificate, and universities abroad want both.

Credential evaluation

A paid report from an approved company that restates your foreign qualification in local terms, which many US and Canadian universities require before they will assess you.

CGPA (Cumulative Grade Point Average)

The same idea as a GPA but covering your whole degree rather than one term — the scale differs by country (India 10, Nigeria 5.0, Pakistan 4.0), so the number alone means nothing without its scale.

Frequently asked questions