Sequencing the deep-clean programme across the break
The work has an order. Areas being used for holiday activity have to be done around them, which usually means later. Floor treatment needs classrooms empty and stays empty for drying, so it belongs early. High-level work should precede floor work, and any trades activity should precede both. Setting the sequence at the start of the break avoids the common outcome where a freshly treated floor is worked over by a contractor.
It also needs to account for what returns. If a room is deep cleaned in week one and then used for a holiday programme for a fortnight, it will need attention again before term. Identifying which rooms fall into that category and scheduling them late, rather than treating all rooms as equivalent, is the difference between a programme that holds and one that has to be partly repeated.
