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But assistant principal Katrina Kerr-Bell said the school was continuing the fight to stage Grease.
The show, originally scheduled for May before the lockdown put a spanner in the works, had been due to begin last night.
However, the recent move to Alert Level 2 meant last night’s show had to be cancelled.
All tickets for the remaining shows had been cancelled and would have to be rebooked.
In a letter to parents, Mrs Kerr-Bell said the show could continue provided there were no more than 100 people in a defined space and groups did not mix; seating would be reconfigured to ensure that.
Tickets would be on sale online today, and details for refunds would be sent out "as soon as we can", she said.
The cast and staff were saddened and appreciated "the kind messages and continued support".
Shows will be held tonight at 6pm, Thursday 6pm, Friday 7pm, and on Saturday at 2pm and 7pm.