Oxford Physics and Physics & Philosophy: A*AA, including Maths and Physics, with A* in Maths, Physics or Further Maths; IB 39 / 766 HL, including Maths and Physics, with 7 in one. Further Maths is helpful, rather than a universal formal Oxford condition.
Oxford Chemistry: A*A*A with Chemistry and Maths. Two A*s must be in its approved science/Maths list, not necessarily both Chemistry and Maths. IB 40 with Chemistry HL 7 and Maths HL 6 / 766 HL; alternatively SL AA Maths 7, HL 776, Chemistry 7 and a second HL science 7. SL AI is not this exception.
Oxford Materials: A*AA, Maths and Physics; A* in Maths, Physics or Chemistry. IB 40 / 766 HL, with the same relevant subjects and 7 placement. GCSE Chemistry or equivalent is required; advanced Chemistry is highly desirable.
Oxford Earth Sciences: A*AA or AAAA, with Maths and Chemistry or Physics; IB 39 / 766 HL with the required subjects.
Cambridge: A*A*A or IB 41–42 / 776 HL centrally. Maths plus two approved sciences / Maths; Further Maths counts for A levels. IB Physical applicants normally need AA HL and two HL sciences. Computer Science or Psychology does not automatically supply a required science.
AP and national routes: Oxford uses four AP 5s, or three AP 5s plus the relevant SAT/ACT threshold. Cambridge normally needs five relevant AP 5s with strong diploma and SAT/ACT results. Natural Sciences is not in Cambridge’s CBSE-only accepted-course list. National equivalence never waives subject conditions.