The breaches were not regarded as cheating and involved one school losing 12 surplus copies of the language test before the testing day and another rescheduling the numeracy test a day later without prior consent.

NAPLAN testing, which is co-ordinated by the Australian Curriculum, Assessment and Reporting Authority, took place on May 10, 11 and 12 last year and schools were made aware of the results in September. The authority reported a total of 75 breaches involving 74 schools across the country.

Some of the more serious cheating breaches included a tester encouraging a student to change an answer and a principal assisting students to complete the language conventions test. Education Department early years and schools deputy secretary Liz Banks said it showed Tasmania conducted testing with a high standard of professionalism.

Ms Banks said 25,000 students in years 3, 5, 7 and 9 took part in the testing from 270 government, independent and Catholic schools.

``Only two minor incidents for Tasmania were recorded which represents a very low level of incidents, given the number of tests involved,'' Ms Banks said.

On notification of the state's NAPLAN results in September, Education Minister Nick McKim said they did not meet expectations.

He described the results as a ``mixed bag'' with the percentage of students who had reached or were above the national minimum standard improving for seven measures but there had been a drop in nine measures.