An East Sussex school devastated by fire will be unable to reopen on Monday after the Easter holidays.
12 fire appliances were sent out to tackle the "severe fire"
The blaze last Tuesday gutted the main hall, staff room, library, drama room, administration offices and toilets at Tideway Secondary School, Newhaven.
Parents are being told the school will be closed to all pupils on Monday and Tuesday and only GCSE-year pupils in Year 11 should attend on Wednesday.
Four teenagers arrested on suspicion of arson have been freed on police bail.
East Sussex County Council said on Friday it was doing all it can to get the school open again as soon as possible.
It thanked parents for their understanding and cooperation and said more information about arrangements from Wednesday would be available on Monday or Tuesday.
Damage to the school is estimated to be in excess of £1m.
There was extensive smoke damage to two teaching blocks, although the majority of classrooms were unaffected.
Up to 80 firefighters from across East Sussex and outside the county tackled the blaze.
Following the incident, East Sussex Fire & Rescue Service called for sprinklers to be installed in all schools and public buildings.
"Fire sprinklers can save considerable fire damage and loss and the resultant impact on the local community," said Deputy Chief Fire Officer Len Richards.
"We strongly urge that in any rebuilding of the school premises, the installation of sprinklers is considered a priority as a life and property saving measure."