Understanding the high school credit system as merely "a system where you pick your subjects" misses what matters. What it actually changed is what appears on the transcript, and how. Some subjects carry a band and some do not. Build a timetable without knowing that difference and you cannot undo it three years later.

Graduation moved from "units" to "credits"

Previously, 204 units meant graduation. Now it is 192 credits. It is not just that the number fell — the structure changed so that completion is judged subject by subject.

To complete a subject, two conditions must be met at once. Attendance must be at least two thirds of lessons, and attainment must be at least 40 per cent. Fall short on either and the student receives an I grade (not completed). That is why the attainment scale expanded from A–E to A–E plus I.

Where an I is given, the school provides separate support to bring the student to the minimum attainment level. So it is less a "fail" than a structure with a remedial completion process attached. That said, accumulated credits below 192 mean no graduation, so it cannot be left alone.

Here is the crux — subjects with no band

Under the 2028 admissions reform, internal grades moved to a five-band relative grade alongside an absolute grade (A–E) for all years and all subjects. But there are exceptions.

Nine convergence-elective subjects in social studies and science do not carry a relative band alongside. Only the absolute attainment grade is recorded. Arts and physical education subjects, scientific inquiry experiments and general education subjects also produce no rank band.

The intention behind the exception is to widen subject choice — to reduce the number of students avoiding a subject they want because of the pressure of band competition. From the student's point of view, though, it becomes a real strategic variable.

• Band competition concentrates on the subjects that do carry bands.
• Subjects with no band do not affect the internal grade average, but instead are assessed through the detailed ability and special notes in the school record.
• So "there is no band, so I can coast" is a dangerous conclusion. In the comprehensive early admission track, why a subject was chosen and what was done in it is read directly.

The order in which to approach subject choice

The question students and parents ask most at selection time is "which subjects are advantageous". But advantage depends on which subjects a school offers and how many students take them, so there is no general answer. What can be settled is the order.

1. Fix the subjects required by your intended field first. Universities sometimes publish recommended subjects, so check admissions office material.
2. Mark which subjects carry a band. Marking which ones come with a relative grade makes the load in each semester visible at a glance.
3. Check how many students take each subject. In relatively graded subjects, smaller cohorts make bands swing more.
4. Plan the activities to leave in the school record alongside. The fewer bands a subject carries, the more weight the teacher's comments take.

What is different from earlier cohorts

This is why older students' advice fits badly. Under the nine-band system, band 1 was the top 4 per cent and every subject carried a band. Now band 1 has widened to the top 10 per cent, and some subjects have no band at all. The phrase "my average band is such-and-such" now carries a different amount of information.

Which items in the school record actually reach universities is set out separately in High School. Read alongside subject choice, it makes a three-year plan easier.

In summary

Three things to establish first under the high school credit system: the 192-credit graduation requirement, the completion conditions of two-thirds attendance and 40 per cent attainment, and the fact that some subjects produce no band. Checking those three against the school's curriculum organisation table is where subject choice starts.