The New Zealand Qualifications Authority has issued an apology and launched an independent review after mistakes were made in five NCEA maths exams.
After the NZQA apologised for the error in the Level 3 statistics exam, it emerged that there were also errors in four other maths papers: a New Zealand Scholarship statistics exam, a Level 1 NCEA maths exam, a Level 2 calculus exam and a Level 2 mathematics probability exam.
The errors have left many students frustrated and upset. They have also caused many teachers to distrust the NZQA exam writing and checking process. Some have suggested they may consider alternative exam systems in the future, like the Cambridge programme.
NZQA is looking into how to mark the affected papers.
"Notwithstanding the comprehensive quality assurance processes we have in place, the error has been made and we are sorry that occurred," NZQA deputy chief executive Kristine Kilkelly said.
"The examination papers will be marked as normal by the panel that has been made aware of the issue - they will take this into account when grading students work."