The Teachers' Pension Scheme is a guaranteed income pension for teachers in England and Wales.
It gives a defined benefit to people upon reaching retirement age, for each year until death, depending on how many years the teacher has paid in.
In 2022, private school teachers in 23 schools in England and Wales under the Girls' Day School Trust went on strike over the threat to close the scheme to new entrants.
The private schools instead argued they should cut teachers' pensions by around 20%, prompting the industrial action.
[1] In response parents groups organised to withhold fees from the schools when their children did not receive school.