I have yet to meet a single head or senior teacher who can answer this off the top of their heads, but it is easy to work out using government-published figures.

- Teachers work 55.7 hours/week total
^{1}, and spend 9.4 hours/week marking^{2}. That’s 17%. - The average teacher salary is £28,951
^{3}, but we have to add the employer’s NI contribution of 13.8% to give an employer cost of £32,946, ignoring all overheads. - 17% of £32,946 of is £5,601. That’s what we spend on marking per teacher, per year.
- The average secondary school employs 65
^{4}qualified teachers, so the total cost per school is**£364,053**.

I’ll repeat that. The average state secondary school spends well over

**a third of a Continue reading**