IGIrish Guidance
Leaving Cert & CAO20 July 2026 · 3 min read

How the CAO Actually Works: A Plain-English Guide

Deadlines, the order-of-preference rule, round offers, and the mistakes that cost students their place — the CAO system explained simply.

The CAO (Central Applications Office) processes almost all applications to Irish universities, institutes of technology and technological universities. The system itself is fair and mechanical — but every year students lose out because nobody explained the rules clearly. Here they are.

The golden rule: genuine order of preference

You list up to ten Level 8 courses and ten Level 6/7 courses. The single most important rule:

List courses in the order you actually want them — not the order you think you'll get.

The CAO offers you the highest preference you qualify for. Putting a "safe" course first doesn't improve your chances of anything; it just means you'll be offered the safe course even if your points would have got you your dream one. You cannot be offered a course lower on your list instead of one you qualify for higher up.

Key dates for the 2026–27 cycle

Date What happens
5 November Applications open
1 February (5pm) Normal closing date (€30 fee)
1 May (5pm) Late applications close (€60)
Early May Change of Mind opens (free)
1 July (5pm) Change of Mind closes
Late August Leaving Cert results
Early September Round 1 offers

The Change of Mind facility is your friend. Most students' preferences in June are better-informed than their preferences in January. Use it — it's free and unlimited until the deadline.

How points and offers work

Your six best Leaving Cert subjects are converted to points (maximum 625 with bonus maths points — work out yours with our points calculator). The "points requirement" you see published is simply last year's cut-off — the points of the last person admitted. It moves up and down with demand each year.

If you meet the minimum entry requirements and your points beat the cut-off, you're offered your highest qualifying preference. If several applicants tie at the cut-off, random selection applies.

Rounds, acceptances and what "accepting" really means

Round 1 offers go out in early September, with about a week to accept. Further rounds follow as people decline offers. Two things students get wrong:

  • Accepting an offer doesn't remove you from higher preferences. If a place opens up in a course higher on your list in a later round, you'll still be offered it.
  • Not accepting anything removes you entirely. If you're holding out for round 2, you must still accept your round 1 offer as insurance.

Common mistakes to avoid

  1. Ranking by points instead of preference. Covered above — the number one error.
  2. Ignoring the Level 6/7 list. It's a separate list with separate offers. A Level 7 course with a progression path can land you the same final degree.
  3. Missing subject requirements. Points aren't everything — many courses require specific grades in specific subjects (e.g. a H4 in a science subject). Check every course on cao.ie and Qualifax.
  4. Filling in three choices and stopping. Use all twenty spaces. Empty spaces help nobody.

If the points race is stressing you out

Remember that the CAO is one route of several — PLC courses and apprenticeships lead to the same careers, and thousands of university places are reserved for further-education graduates. And if the problem is that you don't know what to put on the form at all, spend an evening on it properly: your guidance counsellor, open days, and an interest-matching tool like CourseCompass.ie (which matches your interests against 830+ Irish courses) will get you further than staring at the points tables.

The CAO rewards students who understand the system. Now you do.

Found this useful?

Get new guides and key deadlines in your inbox.

Keep reading