Tasmanian Association of State School Organisations president Nigel Jones said it was important to remember NAPLAN was "just a snapshot" of a student's learning, it does not represent the whole picture.

About 50 per cent of all Australian students, including Tasmanian students, were migrated to NAPLAN Online this year, with the rest to follow by next year.

Those participating in NAPLAN Online were plagued with issues on the first day of the testing period on Tuesday after the server crashed.

Reports of students work being lost and time being counted down incorrectly on the tests caused angst for some parents and criticism of the NAPLAN system emerged from across the states.

Tasmanian students were affected by the glitch but the number of students who are affected is not known.

Those who were affected by the server issues had to submit incomplete tests, and it's not believed that they will be able to re-sit the tests.

IN OTHER NEWS:

"NAPLAN does not provide an assessment on other aspects of a student's education nor does it consider factors which may influence the result. Not everyone performs at their best in a test or examination setting that has time limits," Mr Jones said.

On May 16, Tasmanian Labor spokesman Josh Wyllie called on Tasmania's Education Minister Jeremy Rockliff to provide answers on the technological issues that plagued the first day of testing.

Mr Rockliff said the connectivity issues were being investigated.

"As you'd expect I'm disappointed that some students have experienced issues during the tests," Mr Rockliff said.

"The Department of Education has established a NAPLAN helpdesk which is providing ongoing support to all, Tasmanian schools in administering the NAPLAN tests."

NAPLAN is managed by the Australian Curriculum Assessment and Reporting Authority with support from individual education departments.

Mr Jones said TASSO encouraged parents to talk with their children about NAPLAN and have a discussion with their class teachers if they had any concerns.

"Decades of research suggests that genuine family engagement in a child's education, can be rewarding for the child, the family and the school and have a positive effect on educational outcomes," he said.

"It is important to remember that no one student's life is or should be defined by the results of a NAPLAN test, the results of NAPLAN should be used to strengthen a student's future learning."

While you're with us, did you know you can now sign up to receive breaking news updates direct to your inbox? Sign up here.