Most early childhood services, ngā kōhanga reo, schools and kura kaupapa Māori are reviewed on average once every three years.
Reviews are undertaken more frequently (in one to two years) where the performance of a school or kura kaupapa Māori is poor and there are risks to the education and safety of the students.
ERO may schedule a review in four-to-five years in schools or kura kaupapa Māori that have a stable ERO reporting history and demonstrate competence in using self review to improve the teaching and learning of students.
Reviews of private/independent schools are different from those of state and state-integrated schools, and kura.