The State Examinations Commission has statutory responsibility for operational matters relating to the certificate examinations. In view of this I have forwarded your query to the State Examinations Commission for direct reply to you However, I wish to inform the Deputy that one of the core principles under which the State Exams Commission operates is that students cannot be disadvantaged as a result of an error on an examination paper. Therefore, the impact of error on candidates' answering is taken into account by the Chief Examiner when finalising the marking scheme for the relevant examinations. The marking schemes for Leaving Certificate Mathematics will, as usual, be published along with those in all other subjects after the issue of results in mid-August. All candidates have the option of viewing their scripts in order to see how the marking scheme was applied to their work and then appealing their results, if they feel this is necessary.