In the last two weeks CCEA have had 70 queries from schools to their helpline.
BBC: O'Dowd orders school computer glitch investigation
The CCEA has apologised for any distress caused to students affected by the errors.
BBC: exam pic generic
This figure was supported by the Council for the Curriculum, Examinations and Assessment (CCEA).
BBC: Assessment glitches reported in 180 schools
The NI exams regulator, CCEA, confirmed there have been problems with the tests over the past three weeks.
It follows a warning about accuracy from the exams watchdog, but the CCEA has only just given details of its mistakes.
The Council for the Curriculum, Examinations and Assessment (CCEA) welcomed the plans.
BBC: John O'Dowd makes changes to A-level exam re-sits
It was an approach which the CCEA would agree with, he said.
BBC: NEWS | UK | Northern Ireland | Exam reform may not affect NI
He said the CCEA had also been at the centre of developing and launching a series of new work-related qualifications at a range of levels.
It proposes using new CCEA tests as a means of selection, but is against the minister's proposal of reducing the proportion of pupils who sit the test annually until it is phased out completely in three years.
BBC: Principals back selection tests
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