IB vs A-levels for US universities is a question with a clear answer, and it is not the one most families expect: neither curriculum is preferred. Stanford says it has no preference for a specific curriculum. Brown says no system or country is given an advantage. Columbia accepts all secondary curricula and reviews each in its own context. What US universities read is the rigour of the subjects chosen inside the curriculum, the predicted grades the school sends, and, at most of the most selective, an SAT or ACT score as well.
So the decision is less IB against A-levels than which programme lets this particular student take the most demanding subjects they can do brilliantly, with the destinations they have in mind. This guide sets out what fifteen selective US universities say about each, the testing rules for the 2026-27 cycle, and where each curriculum earns college credit. How IB and A-levels compare with CBSE and ISC is covered in IB vs CBSE for US and UK admissions.
Do US universities prefer IB or A-levels?
No, and they say so in writing. What they do expect is a full, demanding programme:
| University | What it says about curriculum |
|---|---|
| Stanford | No preference for a specific curriculum; British-system applicants will generally have taken at least three full A-levels |
| Brown | No preference for or advantage given to any particular system or country |
| Columbia | Accepts all secondary school curricula, reviewed in context; applications read by region |
| Harvard | No "one size fits all" rule about which curriculum to study |
| Penn | No explicit course requirements; wants students to use the most rigorous courses their school offers |
| MIT | Readers trained in each region's system; grades are not converted to the American system |
| NYU | A minimum of three A-levels for eligibility; IB students applying to Stern or Tandon should take Mathematics |
For IB students, the full Diploma with the strongest Higher Level subjects the student can manage is the expected shape. IB students take three or four subjects at Higher Level, 240 teaching hours each against 150 at Standard Level. For A-level students, three full subjects is the norm, and a fourth adds little unless it is genuinely part of the student's direction.
Predicted grades for US universities
Final IB results arrive in July and A-level results in August, after every US decision, so universities read predicted grades instead. The school sends them, not the student.
- Harvard expects IB and A-level schools to send predicted grades with the mid-year report, based on current work and mock exams.
- Stanford requires a school official to send predicted IB marks, including bonus points, or GCSE results and predicted A-levels.
- Penn asks for predictions where final results will not be released before its deadlines, and reviews final results before the student enrols.
- Brown relies on predictions and reserves the right to withdraw an offer if final results fall short of them.
- Dartmouth accepts predictions only from a school official, never self-reported.
The practical consequence for families in India is that the school's predictions, and the counsellor who sends them, matter as much as the curriculum. A school that predicts carefully and explains its grading on the school profile gives the reader confidence in the numbers.
Is the SAT required for IB students? The 2026-27 rules
For the 2026-27 cycle, for entry in autumn 2027, the most selective universities divide into three groups, from their own pages:
| Policy | Universities |
|---|---|
| SAT or ACT required | MIT, Harvard, Yale, Stanford, Penn (hardship waiver available), Cornell, Brown |
| Test-optional this cycle | Princeton (required again from the following cycle), Columbia (required from August 2027), Duke, Northwestern, UChicago, NYU (through 2027-28) |
| IB or A-level predictions can meet the requirement | Dartmouth, for students at schools outside the US; Carnegie Mellon's colleges other than computer science |
Two details catch IB families out. Yale accepted IB results in place of the SAT last cycle and no longer does for 2026-27. And Harvard counts IB or A-level results only in exceptional cases where the SAT or ACT is not accessible. For an Indian IB or A-level student aiming at the most selective universities, plan on sitting the SAT, whatever the curriculum. What score to aim for is in the SAT score you need for the Ivy League.
IB HL college credit in the US, and A-level college credit
Both curricula can earn college credit or advanced placement at high grades, which can free time for a second major or a semester abroad. The pattern across universities' own policies:
| University | IB | A-levels |
|---|---|---|
| Columbia College | Higher Level, 6 or 7, up to 16 points | Grade B or higher, up to 16 points; not toward the Core |
| NYU (Arts and Science) | Higher Level, 6 or 7, 8 credits per exam; no credit for Standard Level | Grade B or higher, 8 credits per exam |
| Cornell | Higher Level, usually 6 or 7, varying by subject and college | Varies by subject: mathematics from grade C, chemistry at A or A-star |
| Penn | Higher Level 6 or 7 in some subjects only | A-star or A in most listed subjects |
| UC system | Higher Level 5, 6 or 7, plus credit for a Diploma score of 30 or above | Grades A, B or C in designated subjects |
| MIT | Higher Level 7 in mathematics and physics | A-star or A in mathematics and physics |
The rule across most universities is that IB credit comes only from Higher Level subjects, which is one more reason to choose Higher Levels that the student will both enjoy and score highly in.
IB or A-levels for the Ivy League: how to choose
Since neither is preferred, choose by the student and the destinations.
IB suits a student who is strong across subjects and wants breadth: six subjects, the extended essay, and theory of knowledge read well in a US application that values range, and the extended essay can become the seed of a research project. It also keeps the UK, Europe and Asia open.
A-levels suit a student who already knows their direction and wants depth: three or four subjects taken further, which reads well for a focused US applicant and is exactly what UK universities ask for. For a student aiming at both the US and the UK, A-levels make the UK side straightforward and do not weaken the US side, provided the SAT is taken.
What matters more than the choice is subject selection with the intended major in mind, predicted grades that hold up, and the school's counsellor writing a strong letter. How a student from a Mumbai IB school competes for the Ivy League specifically is in getting into the Ivy League from a Mumbai IB school.
The curriculum and subject decision is made in Grade 9 or 10, which is where Plinth's work usually begins. If you are weighing it now, request a call; the form shows the fee for your child's grade first, and the Grade 10 plan is set out under admissions counselling.
Where this guide stops
Policies are from each university's own admissions and credit pages, read on 10 November 2026, for the 2026-27 cycle. Testing policies have changed every year since 2020 and several universities announced changes for the following cycle; check each one's page for your year of entry. Credit policies vary by college within a university and by subject, and are set each year. Michigan's A-level credit policy and Duke's position on predicted grades were not published where we could read them, so they are left out.