The online system for school exams faces a test of its own Wednesday morning when thousands of teenagers try to log-in to the level two English exam.
Teachers say it is critical there is no repeat of last week's failure when the Qualifications Authority stopped perhaps a couple of thousand students from joining the level one exam because the system wasn't coping with the volume of log-ins.
That glitch came just a week after a similar problem with an online literacy and numeracy test.
Education correspondent John Gerritsen reports.
NZQA has been approached for comment.
