The government has published national standards data from nearly 2000 schools.
National standards are benchmarks in reading, writing and maths.
The results from the schools show how their students are performing against those benchmarks, and identify problems.
The standards were introduced last year and Education Minister Hekia Parata says the data is a powerful tool to help deliver support where it's needed.
Ms Parata last week said the data showed 76 per cent of year one to eight students reached or exceeded the national standard for reading, 72 per cent for maths and 68 per cent for writing.
It also showed Maori and Pacific Island students weren't performing as well as others.
The Dominion Post newspaper last week published data from about 1000 schools, which it obtained through Official Information Act requests.
The data allows parents to compare the performance of schools in their area, but so far no media outlet has produced a comprehensive "league table".
There are 2087 schools under the national standards regime.
Ms Parata says 188 haven't submitted their results or their data is incomplete.The data is on www.educationcounts.govt.nz.
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