How to Study for the Leaving Cert in One Month
About four weeks to the June written papers. Why the unit of work is a marked past paper, what a month cannot do, and why your mock is not a ceiling.
ExamAI Team8 min read 
With a month to go, about four weeks to the first written paper, the unit of work is a single marked past paper. You sit one under exam conditions, mark it against the official scheme, and write down what cost you marks. That list is the plan for the four weeks. Four weeks is shorter than the time a course takes to teach, so the marked paper is what tells you where to put them.
Our three-month study plan sets out the triage underneath this. It ranks your subjects by what one grade band is worth on the CAO points grid, then works at topic level from marked papers. All of that still applies in May, at a smaller scale. The three-month version assumes there is still room to pick up a topic from scratch, and in May the reachable work is material you have already met.
How much time four weeks is
For the last three years the first written paper has fallen on a Wednesday in early June. It was Wednesday 3 June in 2026, Wednesday 4 June in 2025 and Wednesday 5 June in 2024. Our post on when the Leaving Cert is on links the SEC timetable for each of those years.
Counting back from a 3 June start, the beginning of May is a little over four weeks out. That figure includes every weekend and every school day still left in it. The State Examinations Commission publishes a fresh timetable each year, so take your own dates from examinations.ie.
Check what is still ahead of you in May
By early May the oral examinations are behind you. On the SEC's provisional schedule of examination and completion dates for 2026/27, the Leaving Cert orals run from Saturday 20 March to Thursday 25 March 2027. Those marks are already fixed, and nothing you do in May moves them.
Three things on that schedule do fall inside the four weeks.
- The Engineering Studies practical runs Tuesday 4 May to Thursday 6 May 2027.
- Coursework Submission Window 3 runs Tuesday 4 May to Friday 14 May 2027.
- The Computer Science written examination is on Wednesday 19 May 2027, with Sections A and B from 9.30 to 11.00 and Section C from 11.30 to 12.30.
The SEC marks that schedule provisional and says the dates can change. If any of those rows applies to you, your four weeks of written-paper time is shorter than four weeks. The full provisional list is in the when the Leaving Cert is on post.
Sit the paper, then mark it
A past paper sat closed book against a timer is the closest available measure of June. The method for one sitting is in our guide to studying with past papers, and every paper and scheme is free from the SEC, subject by subject on pages like Leaving Cert maths and Leaving Cert biology.
The marking scheme states what earns each mark, so working through your own answers against it turns a total into a list of specific corrections.
Budget for both halves. Each maths paper ran for 150 minutes on the 2026 timetable, and marking one takes time on top of that. In four weeks the number of papers you can mark properly is small.
What the marked list gives you
Our post on how many past papers to do makes the case for counting marked papers only, and sets out a test for when another paper has stopped earning its time. In a four-week window the list those papers produce is what you act on.
Some items on that list cost you nothing to fix in content terms. The 2025 Higher Level maths scheme prices a rounding slip or an omitted unit at one mark below full credit, on a mark it calls Full Credit -1. Page 5 of the same scheme states that "in general, an answer without sufficient supporting work is awarded the lowest level of credit above No Credit".
Neither of those costs marks because of missing content. They cost marks because of how the answer was written down, and they only appear once you have marked your own work against the scheme. Our post on how marking schemes work sets out both rules and the scales they sit on.
Topic rescue where you have already met the material
Some topics recur across the years often enough that the record is worth reading. We have counted the strands subject by subject, for example in the most common topics on Higher Maths papers and the most common topics on Biology papers. Those posts show where the frequency data comes from and how to read it for your own subject.
That record is history, and it does not tell you what is on this year's paper. What it can do in May is order a list you already have. A high-frequency topic you half remember from 5th year is a different job from one you have never covered.
Timing is its own piece of work
By May most of a subject's content has been taught. What a timed paper adds is whether you can produce it inside the session length.
Take the session length off the SEC timetable for your year and the total marks off the front cover of the paper. Dividing one by the other gives you the minutes each question is worth. Our post on exam time management works it through for maths and English, including what running over on one question costs elsewhere.
Do the band arithmetic once
Which subject deserves most of the four weeks is still a question for the CAO points grid. One band is worth a different number of points in different places on that grid. The three-month plan has the full table and the two places where the arithmetic changes sharply.
Do that pass once, early in the month, off marked papers, since the percentage is what the grid ranks. The ranking only changes when a new marked paper changes it.
What a mock result describes
Mock exams sit outside the state examinations system. Citizens Information states that "the State Examinations Commission is not responsible for mock exams". Where a school charges for them, it says the charge is likely to cover the papers or getting them corrected externally (Leaving Certificate examination fees).
So a mock result comes from a paper the SEC did not set and did not correct. A mock also sits months ahead of the June papers, before your last stretch of work. The result describes that paper, on that day, and nothing published maps it onto a June grade.
An SEC past paper is set and marked by the body that sets June. Sat now, to the real time allowance, it gives you a number from the same source as the one you are working towards.
What four weeks will not do
Four weeks does not cover a course you have not met. A subject where most of the syllabus is new to you in May will still be mostly new in June. The workable option is to put the time where the marks are reachable.
It also does not reopen anything already closed. Submitted coursework and a March oral are both already marked.
And a predicted paper takes nothing off the list. The SEC has issued a public warning about sources claiming advance knowledge of an examination paper, quoted in full in the three-month plan. A prediction that misses leaves you sitting the paper without the topics you dropped.
Sleep and the exam day
The HSE's guidance on sleep problems gives 8 to 10 hours for young people and 7 to 9 for adults. Its practical suggestions include getting up at the same time each day, keeping the bedroom dark, and avoiding caffeine within four hours of bedtime. That is general advice for anyone, and the HSE publishes no exam-week version of it.
For the day itself, the 2026 timetable told candidates they "are required to be in attendance at least half an hour before the examination begins in the subject in which they first present themselves". The session times for your own year are on the timetable, and our post on when the Leaving Cert is on lists them for the last three.
FAQ
Is a month enough to study for the Leaving Cert? It is enough time to sit past papers, mark them and act on the corrections. It is not enough time to cover a course you have not met. Which of those describes your subjects is what decides where the four weeks go.
Is a month enough to pass the Leaving Cert? The current eight-point scale has no grade marked pass. The lowest grade named in the CAO's general matriculation requirements is O6 or H7, and a H7 covers 30% to under 40%. Our post on Leaving Cert grades explained sets out the bands and where that requirement comes from. How far you are from a given band is something a marked paper tells you today.
How many past papers should I do in a month? Count only the ones you mark. Our post on how many past papers to do sets out a test for when another paper has stopped earning its time.
My mocks went badly. Does that decide my Leaving Cert? No. A mock is set and corrected outside the SEC process and sat months earlier. The measure that comes from the same source as June is an SEC past paper, marked against the official scheme now.
Should I study a topic I have never covered? That depends on what else is on your list. Time spent on wholly new material in one subject is time not spent on corrections you already know how to make in another.
How many hours a day should I study in the last month? Neither the SEC nor the Department of Education publishes a number, a point our three-month plan makes at more length. Track marked papers and your corrections list, since both can be checked.
Start with one paper and its scheme. Search for both together in the ExamAI past paper finder, sit the paper, and mark it. The list that comes back is the plan for the rest of the month.