Four kura kaupapa Maori are among seven schools on a Qualifications Authority watchlist because of problems with NCEA internal assessments.
The authority is refusing to accept internal assessment results from Te Kura Kaupapa Maori o Kaikohe, and its students are being assessed by another school.
However, the school has improved and that condition is likely to be lifted next term.
The school's deputy chief executive, qualifications, Richard Thornton, says teachers at the kura awarded students results they might not have achieved.
The other kura kaupapa on the watchlist are Maniapoto in Te Kuiti, and Hoani Waititi and Mangere in Auckland.
An audit last year of Te Kura Kaupapa Maori o Mangere found its students' achievement was being disadvantaged by kaiako (teachers).
The Qualifications Authority says all the kura are making good progress in addressing their problems.