The 25 CAO Bonus Points for Higher Maths: How They Work and Whether They're Worth the Risk

The 25-point bonus for Higher Level maths is the single biggest points lever in the Leaving Cert, and it's widely misunderstood — including the order it's applied in, which decides whether a student actually receives it at all.

Who gets the 25 bonus points?

Any student who sits Higher Level maths and achieves H6 or above — that is, 40% or more — receives 25 extra CAO points. There is no bonus at H7 or below.

The bit most people get wrong: the order of calculation

The 25 points are added to the maths grade first, and only then are your best six subjects selected. This matters because it changes which subject gets dropped.

Take a student with an H6 in maths (46 points) and a seventh subject worth 56. Judged on base points alone, maths looks like the weakest and would be discarded. But the bonus is applied first, so maths is actually worth 71 — comfortably inside the best six, and the 56-point subject is dropped instead. The bonus effectively rescues a mediocre maths grade from being ignored.

The maximum CAO score is 625, not 600: six H1s give 600 points, and the Higher maths bonus adds the final 25. You cannot reach 625 without Higher Level maths.

Why 40% is the number that matters

A student scoring 40% at Higher Level receives 71 points. A student scoring 100% at Ordinary Level receives 56. The barely-passing Higher student is 15 points ahead of the perfect Ordinary student.

That gap is the whole argument for staying at Higher Level, and it reframes the goal usefully. The target isn't a good grade — it's 40%. Everything above that is a bonus on top of the bonus.

The risk: the cliff at H7

The bonus is all-or-nothing, and that's what makes it a genuine gamble rather than a free gift. Score 40% and you get 71 points. Score 39% and you get 37. One percentage point swings 34 points — more than half a grade in most other subjects.

That's the real risk of chasing the bonus. A student who is reliably in the mid-forties is taking almost none. A student hovering at 32% is taking a very large one, because the downside isn't 'slightly fewer points' — it's fewer points than they'd have got by never attempting Higher at all, plus the study time it consumed.

Is it worth chasing? A rough rule

One caveat on the arithmetic: points aren't the only consideration. If Higher maths is consuming the time that three other subjects need, the 25 points can cost you more elsewhere than they earn. Count the whole timetable, not just maths.

A worked example: how the bonus changes which subjects count

Take a student sitting seven subjects: H2 English (88), H3 Irish (77), H4 Biology (66), H4 Geography (66), H5 French (56), H5 Business (56) and H6 Maths (46).

Without the bonus, maths at 46 is the weakest of the seven and would be the subject dropped, giving a total of 409 from the other six. With the bonus applied first, maths becomes 71 — now the fifth-best subject. Business at 56 is dropped instead, and the total becomes 424.

The bonus is therefore worth more than its face value in this case. It adds 25 points to maths and simultaneously swaps out a 56-point subject for a 71-point one, a net gain of 15 over the no-bonus total. This is why students are often advised not to abandon Higher maths purely because the grade looks low compared with their other subjects — the comparison is made after the bonus, not before.

Three common misconceptions

1. "You need to pass maths to get any points." You do not. A H7 or an O7 still scores points, and maths is not a universal CAO requirement — though many individual courses set their own minimum grade.
2. "The bonus is added at the end." It is applied before the best six are selected, which is what makes it worth more than 25 points in many cases.
3. "Ordinary Level is safer." Safer only if the alternative is an H7. A student capable of 40% at Higher is throwing away 15 points or more by sitting Ordinary and acing it.

Weigh it against the rest of the timetable

The bonus is generous, but it is not free. Higher Level maths takes more study time than any other subject for most students, and that time comes out of five or six other subjects that also carry points.

A useful way to think about it: if holding Higher maths costs you one grade in two other subjects, you have lost roughly 20 to 24 points to gain 25. That is close to break-even, and it is the real reason some students are better off dropping even though the headline arithmetic favours staying. Count the whole timetable before deciding.

Does the bonus apply to anything else?

No. The 25-point bonus applies only to Higher Level Leaving Certificate mathematics. It does not apply to Applied Maths, to any science subject, or to Higher Level papers in other subjects — those carry only their standard points.

It's also worth knowing that the bonus scheme has been in place since 2012 and is periodically reviewed. It applies for current exam years, but if your child is several years away from the Leaving Cert, check the position closer to the time rather than assuming it will be unchanged.