How Leaving Cert Marking Schemes Work

A marking scheme is the document an examiner uses to put a number on your answer. The State Examinations Commission publishes one for every paper it sets, and it is the document your own script was marked against. It states, question by question, what earns each mark.

This post covers where the schemes are, how one is laid out, and how partial credit is awarded, worked through with the real 2025 Higher Level schemes for maths, English and biology.

Where the marking schemes are

The SEC publishes them in the Exam Material Archive. Choose Marking Schemes at the first dropdown, then the year, the examination and the subject. The most recent marking scheme year in the archive on Friday 7 August 2026 was 2025.

On this site the scheme sits beside the paper it belongs to. Every year page carries a marking scheme link next to each paper, so Leaving Cert maths 2025 and Leaving Cert English 2025 each give you the paper and the scheme from one page. The PDFs are hosted by the SEC in both cases.

Read the front matter once

Every scheme opens with the same note to teachers and students, and three points in it change how you should use the document.

The scheme was written for trained examiners. The SEC says marking schemes "are not intended to be standalone documents", and that examiner training involves marking samples of student work and discussing the marks awarded (Mathematics 2025 Higher Level, page 2). A scheme records what earned marks. It does not fully explain how a borderline answer was judged.

The scheme was finalised after the marking. A draft is prepared before the exam, and the SEC states it "is not finalised until examiners have applied it to candidates' work and the feedback from all examiners has been collated and considered". The published version is the one that was applied to every script.

The details do not carry over to next year. The same page states that "assumptions about future marking schemes on the basis of past schemes should be avoided". The underlying assessment principles stay the same. The mark breakdown for a particular question can change from year to year without notice.

Maths: the A, B, C and D scales

Maths schemes do not award marks one at a time. Each part of a question is marked on a scale, and the scale decides which mark totals are even possible for that part. A scale is named by its mark total and a letter, so 10D is the ten-mark D-scale. The letter gives the number of categories the scale sorts answers into, and the 2025 Higher Level scheme lists the marks each one generates on page 4.

An A-scale has two categories, correct and incorrect, and awards all or nothing.

The five categories of a D-scale are described in the scheme as a response of no substantial merit, a response with some merit, a response about half-right, an almost correct response, and a correct response. Those three middle categories are what the question-by-question notes call low, mid and high partial credit.

The consequence is that on a 10D part there is no such thing as 7 marks. The awardable marks are 0, 2, 4, 6 and 10. One extra value exists, called Full Credit -1, worth one mark below full credit. The scheme applies it "typically involving incorrect rounding, omission of units, a misreading that does not oversimplify the work, or an arithmetical error that does not oversimplify the work", and marks those places with a *. On a 10-mark scale that gives 9.

Two further rules from page 5 of the same scheme change how you should mark yourself.

• "In general, an answer without sufficient supporting work is awarded the lowest level of credit above No Credit." A correct final answer with nothing written under it can sit at low partial credit.
• "In general, accept a candidate's work in one part of a question for use in subsequent parts of the question, unless this oversimplifies the work involved." A wrong number carried forward correctly does not cost you the later parts again.

One question, marked

Question 1(a) of Maths Higher Level Paper 1, 2025 asks you to solve the inequality |x − 3| ≤ 12 for x in the real numbers. The scheme marks it on Scale 10D, and names what sits at each level.

• Low partial credit, worth 2 marks. Work of merit, "for example, writes x − 3 = −12, or indicates squaring". A relevant effort at plotting y = |x − 3| counts, and so does plotting the line y = 12.
• Mid partial credit, worth 4 marks. "Finds x = 15 or x = −9", or reaches a quadratic equation or inequality with 0 on the right-hand side.
• High partial credit, worth 6 marks. "Finds x = 15 and x = −9".
• Full credit, worth 10 marks. The answer −9 ≤ x ≤ 15. The scheme accepts a correct answer without work here, and accepts the answer written as two separate inequalities joined by "and".
• Full Credit -1, worth 9 marks. A * is applied once if strict inequalities are used, or if the "and" is left out of the two-inequality version.

A student who found both values and stopped has 6 out of 10. Writing one more line, joining the two values into a range, is worth 4 marks on a single part. That gap is invisible from a total.

English: the PCLM criteria

English does not mark by content points. Every task on both papers is assessed against four criteria, set out on page 2 of the 2025 Higher Level scheme.

Appendix 1 of the scheme says what each one covers. Clarity of Purpose is engagement with the set task, including relevance, focus and understanding of genre. Coherence of Delivery is the ability to sustain the response over the entire answer, covering sequencing, management of ideas and control of register. Efficiency of Language Use covers vocabulary, syntax, punctuation and fluency appropriate to the task. Accuracy of Mechanics is spelling and grammar.

One rule ties them together. "Given the primacy of Clarity of Purpose (P), marks awarded for either Coherence of Delivery (C) or Efficiency of Language Use (L) cannot exceed the marks awarded for Clarity of Purpose." Your mark for how well you wrote is capped by your mark for answering the question set.

On a 50-mark Question B, the marks divide as P 15, C 15, L 15 and M 5. The grade grid in Appendix 2 converts each of those to a grade band, so a 15-mark criterion runs 15 to 14 for an H1, 12 for an H2, 11 for an H3, and down to 4 or below for an H8. Marking your own composition means giving yourself four separate marks, not one.

The scheme also prints, under most questions, a list headed indicative material. For the 2025 Paper 1 question on the "underdog effect", that list includes the effect heightening empathy, swaying voting intentions, and fuelling a sense of injustice. Each list ends with "Etc." The scheme says the indicative material "is provided to aid examiners and is intended to broadly indicate the type of responses candidates might offer", and that it "is not exhaustive and all appropriate valid answers should be marked according to their merits, using the criteria for assessment". Learning the list off gains you nothing, because the marks come from the four criteria.

Biology: reading the notation

Science schemes are compressed to save words, and the notation is explained once at the front. From page 3 of the 2025 Biology Higher Level scheme:

• A solidus / separates the words or phrases that each earn marks.
• The mark for an answer appears in bold beside it.
• 5(4) means there are five parts to the answer, each allocated 4 marks.
• 2(4) + 4(3) means the first two correct answers are awarded 4 marks each, and each answer after that is awarded 3 marks.
• A word in brackets is not required, and is there to give context or an alternative.

A key term earns marks only in the correct context. The scheme works this through with a question on how water reaches the leaf, marked as any six at 3 marks each. It awards the answer "Water is drawn up the xylem by osmosis" 3 marks out of 18, and the scheme is explicit that those 3 marks are for referring to the movement of water through the xylem only. "Osmosis" earns nothing here, because osmosis is the wrong mechanism for that movement, so the second key term is the incorrect part of the sentence.

Surplus answers can cost you marks. In Section A, "a surplus wrong answer cancels the marks awarded for a correct answer". Asked to name the four elements always present in protein, a candidate who writes carbon, hydrogen, oxygen, nitrogen and calcium is awarded 3(3), because the wrong fifth answer cancels a right one.

One caveat on this section. Biology moves to a new exam structure from 2027 under the redeveloped specification, and no scheme has been published for the new paper yet. The notation above is how the SEC has written its biology schemes to date; what changes for the new paper is covered in how to get a H1 in Leaving Cert Biology.

Why self-marking changes what you study next

Going through the scheme line by line tells you why each mark went, and different reasons call for different work.

• You did not know the content. Go back to the topic.
• You knew it and wrote it in a form the scheme does not credit, with no supporting work, no units, or the wrong register. Do more questions of the same type.
• You knew it and ran out of time. Rereading the chapter will not fix that.

A mark out of 100 does not separate those. The scheme does, part by part, and it also shows you the small repeated costs. In the 2025 maths scheme a rounding slip or a missing unit is one mark under Full Credit -1, applied once per unit of marking, so the same habit costs you again on every question it appears in.

The past paper study method sets out how to sit the paper closed book first. Afterwards, work in the order the scheme does, and write down the reason beside each lost mark rather than the number.

FAQ

Where do I find a Leaving Cert marking scheme? In the SEC Exam Material Archive, under Marking Schemes. On this site, each paper's year page links its scheme, such as Leaving Cert Biology 2025.

What do low, mid and high partial credit mean? They are the middle categories of a maths marking scale. A D-scale has five categories and a C-scale has four, and the scheme lists what earns each one for that specific question.

What does PCLM stand for in English? Clarity of Purpose, Coherence of Delivery, Efficiency of Language Use, and Accuracy of Mechanics. They are weighted 30%, 30%, 30% and 10% of every task.

What does 5(4) mean in a biology marking scheme? Five parts to the answer, 4 marks for each part.

Do I lose marks for wrong answers? It depends on the subject and the section. On the biology papers examined up to 2026, a surplus wrong answer in Section A cancels a correct one. In maths, where a solution requires substantial work, the scheme says to mark all separate attempts and award the marks for the best one, regardless of crossing out.

Are marking schemes the same every year? The assessment principles are. The SEC states in each scheme that assumptions about future marking schemes based on past ones should be avoided, because the marking of a particular question type can change.

Can I use a marking scheme to predict the exam? No. A scheme records how one paper was marked. It says nothing about what a later paper will contain.

Marking your own work is slow, and it is hard to be fair to yourself on a long answer. The ExamAI tutor marks your attempt against the real scheme for that question and tells you which level of credit it reaches and what is missing, so the feedback is about your answer.