Choosing IB Subjects — A Hong Kong Family's Guide

The decision made at fifteen that quietly shapes university options at eighteen

An Empower Education resource. Written for Hong Kong students and parents. Last reviewed for the 2026 admissions cycle — always confirm current requirements with the IB and directly with each university.

Most of what happens in a Hong Kong school career is recoverable. A bad term can be repaired. A weak essay can be rewritten. A disappointing mock can be answered in the real exam.

Subject choice is different. Your child picks six IB subjects and three Higher Levels at around fifteen, roughly two years before those choices meet a university application — and by the time the consequences appear, the decision is effectively locked. Switching an HL mid-Diploma is difficult at best and often impossible; and the specific doors that a subject combination quietly closes tend to become visible at exactly the moment the student wants to walk through one.

This guide is not a list of what each university requires. It deliberately isn't — those requirements change every year, differ by course, and no downloadable table stays accurate. What it gives you instead is more durable: a way to think about the decision, the traps Hong Kong families most often fall into, and a method for verifying the real requirements yourself, for your child's actual targets.

How the IB is actually built

Before the choice makes sense, the structure has to be clear. The Diploma is deliberately broad.

Structure and passing conditions are set by the IB and can change. Confirm the current criteria at ibo.org.

Two implications Hong Kong families routinely miss:

The breadth is protection. Because every student takes a language, a science, a maths, and a humanity, it's genuinely hard to lock yourself out of most degrees by accident. Compared with A-Levels — where three narrow subjects can quietly eliminate whole fields — the IB keeps far more doors open by default. That is a real advantage.

Standard Level still counts. Because many competitive offers are made on the total out of 45, SL subjects carry full weight in the number that decides an offer. Treating SL subjects as "the easy three" is one of the most expensive habits we see.

The one idea: breadth protects you, HL decides the doors

Here is the distinction to hold onto:

The six subjects keep your options broad. The three Higher Levels are where doors actually open — and close.

Almost every subject-choice conversation that goes wrong is really an HL conversation. The question is never "is this a good subject?" It is "which doors does this HL combination leave open, and are they the doors my child might want?"

The honest map: three tiers of requirement

University subject requirements are not uniform. They fall into three tiers, and knowing which tier your child's possible futures sit in tells you how much the HL choice actually matters. These are general patterns, not institutional promises — verify every specific course (see the worksheet below).

The pattern worth internalising: a surprising number of careers require no specific subject at all. The heavy, non-negotiable requirements cluster in medical, technical, and scientific fields. Outside those, the anxious search for the "right" combination is usually solving a problem that doesn't exist — while the real risk (choosing subjects your child isn't strong at, and scoring poorly) goes unaddressed.

The corollary that surprises Hong Kong parents most: the fear that a subject choice will "close off law" or "rule out journalism" is, in most cases, unfounded. Those fields are competitive on grades, not on subject combinations. Meanwhile, the fields that genuinely gate on subjects — medicine, engineering — gate hard, and no amount of later effort fixes a missing HL.

The maths decision — the one that matters most

If there is a single choice to think hardest about, it is maths. The IB splits it into two routes, and this is where Hong Kong families most often get advice from rumour rather than evidence:

Three things to understand before choosing:

1. It is effectively irreversible. Switching route or level mid-Diploma is hard. This decision must be made with the possible futures in mind, not just the current favourite.
2. HL AA is the common gate for quantitative degrees at selective universities — and where a course requires it, no substitute works.
3. The trap runs both ways. Taking HL AA "just in case," when your child is not strong at abstract maths, can drag down the total score that every offer depends on. A lower grade in a subject you didn't need is not insurance — it's damage. Equally, avoiding HL AA to protect the score can quietly remove engineering, physics, and quantitative economics from the table.

The honest answer is not "always take HL AA." It is: establish whether your child's realistic target fields require it, and weigh that against genuine mathematical strength. Which is exactly what the worksheet below is for.

Where Hong Kong families most often go wrong

1. Choosing for prestige rather than fit. Subjects picked because they sound rigorous, or because another family's child took them. Admissions offers rest on the score and on genuine engagement — neither survives two years of a subject your child doesn't like.

2. The "insurance" HL. Taking a demanding HL for a career the student has no real interest in, "just in case." This is the single most common self-inflicted wound: it costs points in a system where the total is the currency.

3. Medicine by default. In Hong Kong, chemistry and biology at HL are often chosen before anyone has asked whether the child actually wants medicine. If they do, it's the right call — those really are hard gates. If they don't, two of three HL slots have been spent on someone else's plan.

4. Treating SL as filler. Offers made on the total out of 45 mean the three SL subjects carry the same weight per point as HLs. Neglecting them is neglecting a third of the score.

5. Rumour as a requirements database. "History HL is essential for law." "You need English HL for journalism." These circulate confidently in parent groups and are, in the main, not true. The only reliable source is the university's own current course page.

6. Deciding without a shortlist. Choosing subjects before anyone has looked at what the student might realistically apply for. The subject decision depends on the destination — reversing that order is how families end up guessing.

The verification worksheet

This is the part to actually use. It replaces the requirements table you were hoping for — with something better, because it will still be accurate next year and it covers your child's targets, not someone else's.

How to do it properly, in five steps:

1. List five plausible target courses. Not dream universities — courses, and be honest about range: two ambitious, two realistic, one secure. If your child has no idea, list five fields instead.
2. Go to each university's own admissions page for that specific course. Not a ranking site, not a forum, not a consultant's PDF — the university's own current entry-requirements page.
3. Record what it actually says, in the table below.
4. Note the date you checked. Requirements change; a check without a date is worthless in twelve months.
5. Look for the pattern. If four of five courses demand HL AA, the decision has made itself. If none do, you have far more freedom than the parent WhatsApp group implied.

Then answer the three questions that resolve the decision:

• [ ] Which HL subjects appear across most of our five targets? (These are non-negotiable.)
• [ ] Which appear on only one or two? (These are a choice — weigh against your child's strength.)
• [ ] Is there any target that would be eliminated by our current plan — and are we genuinely willing to eliminate it?

If the honest answer to the third question is "we don't know yet," that is useful information: choose the combination that keeps the most doors open at the least cost to the score.

A realistic timeline

Your child's school sets its own subject-choice deadlines and offers different combinations. Always work from what your school actually offers.

Before you decide: a final check

• [ ] Have we listed five specific target courses, not just universities?
• [ ] Have we checked the requirements on the university's own current page — and dated the check?
• [ ] Do we know whether our targets sit in Tier 1, 2, or 3?
• [ ] Have we made the maths route decision deliberately, on evidence rather than fear?
• [ ] Is every HL a subject our child is genuinely strong at and interested in?
• [ ] Are we treating the SL subjects as part of the score, not as filler?
• [ ] Have we distinguished what the student wants from what the family assumes?
• [ ] Have we spoken to the school counsellor, who knows the actual record and offer?

What to do next

1. Do the worksheet before the conversation. Most subject-choice arguments are really arguments about missing information. Five verified course pages usually end them.
2. Choose for strength and interest, within the verified constraints. Where a subject is genuinely required, it isn't a choice. Everywhere else, the score — and two years of your child's life — depend on picking things they can do well and want to do.
3. Write down the doors you're closing, deliberately. If HL choices rule something out, say so out loud as a family now, rather than discovering it in Year 13.

Subject choice depends entirely on the specific courses, systems, and countries your child may target — and it is one of the few decisions that is genuinely hard to undo. If you'd like an honest read on where your child stands and which routes their choices should protect, our founders offer a free Preliminary Fit Review — a short conversation about fit and next steps, with no obligation.

This guide is for general information and describes broad patterns, not the requirements of any specific university or course. IB structure, passing criteria, and university entry requirements change and vary by course; always verify current requirements directly with the IB (ibo.org), each university's own admissions pages, and your child's school before making subject decisions. Field and course references describe the admissions landscape and are not recommendations or guarantees of any outcome.