School principals says this year's NCEA and Scholarship exams appear to have been problem free.
The Secondary Principals Association says unlike previous years, it has had no complaints about errors or overly difficult questions in the exams, which began three weeks ago and finish on Wednesday.
The Qualifications Authority says it is aware of just four minor errors across the 116 tests.
The 2000 people marking the exams have to complete the job by Christmas Eve.
The authority will provide students' results online for in the first half of January and results will be mailed a week later.