Blairgowrie High School has been closed to pupils due to a “failure” in a water pipe.
The building was shut for staff and pupils on Monday while the issue was fixed.
Online learning resources were provided following the disruption to lessons.
The cause of the pipe problem has not been revealed.
Perth and Kinross Council confirmed the school would reopen on Tuesday as normal to staff and pupils.
A statement from Perth and Kinross Council said: “The water supply to Blairgowrie High School has been restored and the school is ready to welcome staff and pupils back from tomorrow (September 24).
“Parents and carers have been notified directly by the school and updates are being shared on social media.”
It comes just weeks after Crieff Primary School was forced to shut after several staff members reported feeling unwell.
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