NAPLAN results have improved across most year groups for writing.Credit:Janie Barrett
"There is no transparency about how ACARA have arrived at the results data published today,and the community must seriously question just how rigorous the independent assessment of the NAPLAN results were,"Ms Peace said.
President of the NSW Primary Principals'Association Phil Seymour said this year's tests are attempting to compare students who sat the tests on paper,those who did them online,those who had problems and were able to resit tests and those who had problems but were unable to resit.
"The results will throw it all out,they can't be compared to other years,"Mr Seymour said.
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He said the Primary Principals'Association will write to parents and teachers to express concerns about the latest results if the association is not satisfied with ACARA's communication.
Mr de Carvalho said about 37,000 students resat the writing test,6500 the reading test,3300 the numeracy test and 3500 resat language conventions.
Students resitting the writing test received a new prompt but those resitting the other exams did the same test that had been used in the original round of testing.
"It was a continuation of the tests[from where they had stopped due to technical issues],they weren't starting again,"ACARA's general manager of assessment and reporting Peter Titmanis said.
"They might have had one or two questions they might have seen before[but because the online tests are adaptive] they might be directed to new questions."
A review of the problems during the online tests is under way and the full rollout of NAPLAN online has been pushed back from next year to 2021.
Mr de Carvalho welcomed the improvement in writing results and attributed them to targeted interventions by individual states and territories.
He said it is harder to improve results in other domains,where about 90 per cent or more of students are achieving at or above the national minimum standard.
Mr de Carvalho said ACARA has begun looking at introducing new"proficient standards"for NAPLAN tests,which will likely be harder to reach than the minimum standards.
The national minimum standard is set at band 2 for year 3 students,band 4 for year 5 students,band 5 for year 7 students and band 6 for year 9 students.