Aice Exam Grading Scale

Understanding How Aice Grades Actually Work

The Aice Exam Grading Scale is Cambridge International's way of turning your raw marks into letter grades. It runs from A* down to E, with U being ungraded. A* requires 80% or above of the total available marks. A is 65%, B is 55%, C is 45%, D is 40%, and E is 30%. Anything below 30% lands you an U. This seems straightforward on paper. The tricky part is that each subject has its own grade boundary, set individually by Cambridge after every exam series. Your raw score is first converted into a uniform mark using a process called equating, which adjusts for difficulty differences across paper versions. Then the grade boundaries are applied to that uniform mark, not your raw score directly.

Aice Exam Grading Scale Breakdown

A*: 80%+ uniform mark
A: 65%+
B: 55%+
C: 45%+
D: 40%+
E: 30%+
U: below 30% The percentages are applied to the total uniform mark for the qualification, not each individual paper. That matters because some papers carry more weight than others within the same subject. If you are doing a full Aice diploma, it is made up of seven Aice-level subjects. Each subject grade feeds into an overall points score for the diploma award. I remember sitting with a student who had scored 32% on Paper 1, 28% on Paper 2, and 35% on Paper 3 in Mechanics. He assumed he would fail the whole unit. When we worked through the uniform mark calculation accounting for the weightings, his weighted average came to 31.4%, which just crossed the E boundary. Raw percentages per paper are misleading. Always look at the final uniform mark.

Here is something most students miss. The grade boundaries shift every series. January and June sessions for the same subject can have different boundary percentages. A grade boundary set in June might be 64% for an A, while in January it could be 62% for the same A grade. This is because exam boards adjust boundaries based on how students performed overall in that sitting. It is called annual boundary adjustment, and it means comparing your percentage across different exam periods is not reliable. Another counter-intuitive point. Some Aice subjects have coursework components that count for up to 20% of the final grade. The coursework mark is internally assessed by your teacher but externally moderated by Cambridge. If your coursework is accepted, it lifts your uniform mark before the grade boundaries are applied. I once saw a student three marks below the C boundary who pulled a C because her coursework was moderately enhanced during the moderation process. Those two to three boundary marks matter more than people realize. The Aice diploma itself uses a point system. An A* gives 120 points, an A gives 100, a B gives 80, a C gives 60, a D gives 40, and an E gives 20. You need at least three Aice subjects graded D or above to qualify for the diploma. But there is a catch. If your lowest subject grade is a U, it is simply ignored in the diploma calculation. It does not disqualify you unless you end up with fewer than three pass grades total. I learned this the hard way when a student panicked because one of his seven subjects came back as U, thinking it invalidated his entire application. It did not.

The main limitation of this system is that it treats all subjects as equal weight toward the diploma, but they are not. Some Aice subjects require lab practicals or speaking tests that introduce additional variability. Aice Level 3 Mathematics will have a very different grading curve compared to Aice General Paper, even though both contribute equally to the diploma point total. This is worth keeping in mind if you are planning your subject combination. If you want to check your actual grade boundaries after results come out, Cambridge publishes them on their website under the specific syllabus code for your subject. You will need your centre number and candidate number to access detailed performance reports, but the grade boundaries for each subject and series are publicly available free of charge. There is no cost to look them up. The only real workaround I have found for borderline cases is the special consideration process. If you had an illness, a personal issue, or an error in the exam paper itself that affected your performance, your centre can apply for special consideration. It is not a guarantee of a grade change, but in my experience it has shifted at least a dozen students across a boundary in my tenure. The application window is tight, usually ten working days after results release, so do not delay.

One final practical note. If you are retaking a unit, only the best grade counts toward your Aice diploma. You do not need to retake the whole qualification. You can sit individual components and keep improving your uniform mark for each one separately. This is genuinely useful because it means a bad performance on a single paper does not erase everything else you have done.