The school has been closed since September 5 following a dormitory fire that claimed the lives of 21 boys.
It was scheduled to reopen on Wednesday following a government quality assurance assessment done last week.
The High Court in Nyeri has barred the reopening of the boarding facilities at Hillside Endarasha Academy after two non-governmental organisations filed a lawsuit, accusing the school management of endangering the safety of its learners.
The institution has been closed since September 5 following a dormitory fire that claimed the lives of 21 boys. It was scheduled to reopen on Wednesday, October 9 following a government quality assurance assessment done last week.