Masterton Intermediate School is one of only 26 schools nationwide that failed to report National Standards data this year.
A Ministry of Education spokesman said the MIS Board of Trustees had not reported data this year because there had been none available when principal Kara Mason started in the role in October last year.
He said the school had since established frameworks for monitoring progress and achievement in relation to National Standards in reading, writing and mathematics.
Progress reports against National Standards were made available to parents earlier this year and the school board was expected to report 2012 data next year.
Ms Mason said that when she began at the school there had been a range of data being collected, mostly based on standardised tests.