These pages are models, not customer logos. Each one uses a conservative hours floor and STPCD 2025/26 leadership pay for England outside London, then subtracts the SchoolRota plan for that number of staff. The cash figure is only the loaded cost of hours no longer spent on the rota. It leaves out agency spend, fairer duty load, and the morning the usual owner is away.
The primary is a one-form entry with about 15 people on the duty rota: TAs, midday supervisors and a small office. The sheet often still sits with the head or the SENCO, because they know who can cover phonics and who is first-aid trained. The floor is 5 hours a week. Open that study if you want the split between the standing rota, sickness and sending the sheet.
The secondary is an 11-16 school with about 88 people on duty and cover. Lesson cover joins the duties, so the week is longer: about 8 hours, often owned by an assistant head even when a cover supervisor runs the list. The trust study is five mixed-phase schools. Each site is at least at the primary floor, the secondary is higher, and someone at the centre spends time chasing which PDF is current. Together that is about 35 hours a week.