For mathematics-heavy CS degrees, check whether the course requires Math AA HL and a particular grade. Choose Physics HL if useful for computing hardware or if it keeps engineering open. Continue formal proof, statistics and programming outside lessons.

Apply: predicted grades, school reference and the course’s current test/interview rule.

After IGCSE Mathematics (and Additional Mathematics if available), take A-level Mathematics; take Further Mathematics when offered for highly mathematical CS programmes, then a relevant third subject such as Physics or Computer Science. Complete the full A levels required by each course.

Apply: check whether Further Maths is expected when your school offers it.

Complete the high-school diploma with advanced maths and sciences. AP Calculus BC and AP Computer Science A are useful where offered; AP Physics C can support hardware/engineering interests. The transcript and school context remain central.

Apply abroad: ask each UK/European university which AP scores and how many it accepts alongside your diploma.

Start a shortlist before choosing HLs. Math AA HL and Physics HL keep many selective engineering options open; Chemistry HL/SL may matter for chemical, materials or biomedical routes. Check the exact mathematics course and HL grade asked by each department.

Apply: track the admissions test, interview and any portfolio for your course.

After strong IGCSE Mathematics and Physics, plan A-level Mathematics and Physics. Consider Further Mathematics where offered; Chemistry can be important for chemical engineering. Verify the full A-level subject combination before dropping a science.

Apply: grades in required subjects, then the relevant test such as ESAT if specified.

Continue calculus, lab sciences and writing through graduation. AP Calculus BC, Physics C and Chemistry are useful where offered; select the physics pathway that fits your school preparation.

Apply abroad: compare your AP exams with each university’s accepted qualification policy; AP classes alone may not satisfy a UK offer.

Check each country and medical school before selecting HLs. Chemistry HL plus Biology HL is a broad option, but it is not universally mandatory. Oxford, for example, asks for Chemistry HL and one of Biology, Physics or Mathematics HL.

Apply: check eligibility, UCAT where required, interviews, English and clinical-placement rules.

After IGCSE sciences, take A-level Chemistry plus the second science/maths required by the particular medical programme; Biology is often valuable. Check any GCSE/IGCSE English and Mathematics minimums. Keep lab-practical requirements in view.

Apply: direct-entry medicine is different from a biology degree.

Complete the school diploma with strong science, maths and writing; AP Biology and Chemistry can show advanced preparation. In the US, the usual route to physician training is bachelor’s degree, required college courses and then medical school.

Apply abroad: UK/Singapore direct-entry eligibility for a US diploma/AP combination is course-specific.

Economics and business courses can have very different maths demands. Math AA HL keeps highly quantitative economics options open; do not assume Math AI HL or SL is accepted by every course. Economics HL is useful context but may not be an entry prerequisite.

Apply: compare the exact mathematics wording and any admissions test for each degree.

Follow IGCSE Mathematics with A-level Mathematics for selective Economics and quantitative finance; Further Mathematics helps where offered and relevant. Economics, History or a strong essay subject can complement the maths requirement.

Apply: decide between Economics, Management, Finance and Business course requirements rather than using one generic list.

Take the most appropriate maths sequence through graduation. AP Calculus BC, Statistics, Microeconomics and Macroeconomics can provide preparation if offered; writing and analytical projects still matter.

Apply abroad: confirm which AP maths and scores are accepted by each UK/European university.

Choose subjects that let you excel at reading, reasoning and essay writing; English or History HL can help, but there is no universal required Law HL. Check language prerequisites for law with a European-language year.

Apply: identify the courses that require LNAT or interview and practise timed argument analysis.

After strong IGCSE English and Mathematics, select A levels you can perform well in, including at least one essay subject if available. A-level Law is usually not required; inspect each programme’s own rule.

Apply: prepare a concise reading and writing portfolio, and register for LNAT when required.

Complete the high-school diploma with strong writing and analysis. AP English Language/Literature, History or Government may help where offered. The ordinary US lawyer path is an undergraduate degree followed by a JD.

Apply abroad: check the accepted AP/diploma mix for a direct-entry UK or Singapore LLB.