The Qualifications Authority says extra support has been provided for Canterbury schools in the lead up to the NCEA exams next week.
Students in Canterbury weren't able to attend schools for a week after the magnitude 7.1 earthquake on 4 September, and some teachers say the disruption could affect students' grades.
Qualifications Authority deputy chief executive Bali Haque says it has done what it can to help ensure those students are not put at a disadvantage.
He says grades derived from the year's work can be issued to those who are unable to sit exams, though so far there has not been a big increase in applications from Canterbury.
Mr Haque says extra staff have also been put into schools to help exam centre managers.