STUDENTS were sent home after a power cut left the Piggott School in Wargrave without electricity and heating.
The Twyford Road school had to bring in a generator after the outage before the school opened on Thursday last week as its IT systems and telephones were affected.
There was no hot water or hot food and the sewerage system which pumps the waste from the toilets stopped working.
The school re-opened as normal on Friday by which time the power had been restored.
Headteacher Derren Gray thanked students, staff and parents for their understanding.
He said: “A decision to close the school is never taken lightly and I trust that parents will understand the need to do so on this occasion.
“The timing was difficult given that students were travelling to school when we were informed that power would be out for a considerable amount of time.”
A spokesman for Southern Electric confirmed that a cable fault at 6.50am caused power cuts to 1,500 properties in the area.
Power was restored to all but 30 homes within 45 minutes and all properties by 10.45am.