Primary school principals have accepted a third collective agreement offer from the Education Ministry.

It includes a six percent base salary increase in July and further rises next year.

There's also lump sum payments and allowances for cultural leadership and professional coaching.

NZEI lead negotiator Lynda Stuart says it goes some way to addressing issues, but there's more work to be done.

She says there are still issues around management staffing and they'll be working with the Ministerial Advisory Group on that.

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