Teachers in the NUT union struck on Tuesday of last week at Northbrook secondary school in Lewisham, south east London.
They were striking in protest at cuts to money paid to teachers who take on additional Teaching and Learning Responsibilities (TLRs).
The total amount of money involved is only £8,000 – a tiny amount in a secondary school budget.
The school was closed for students between years seven and ten.
One of the governors at the school is the local Tory candidate for the mayor of Lewisham.
Up to 100 students at Filsham Valley school in Sussex walked out of lessons on Friday 5 March in protest at plans to transform the school into an academy.
The council plans to merge the school with The Grove school to create Academy West.
Students walked out the day after a 24-hour strike by teachers in the NUT union.
One student said, “The teachers went on strike and we wanted to do our bit.”
Campaigners in Trafford, Manchester, have called a march against academies.
They are fighting plans to close two secondary schools, Lostock College and Stretford High School, and replace them with an academy run by Trafford College.
The march will assemble at 3.45pm at Lostock College, Barton Road on Thursday 18 March. It will march via Stretford High School to Trafford Town Hall.