A dozen schools are facing disruption as support staff walk out in a dispute over pay.
Employees at 12 schools managed by the Cathedral Schools Trust across Bristol and North Somerset began a two-day strike on Wednesday after their annual pay increases were withheld for five months.
The employees said the delay - which was only resolved in April - had left them short of thousands of pounds over the last five years.
A spokesperson for the trust said: "We are continuing to work proactively with the unions to resolve this as soon as possible, and our focus remains on supporting our schools to minimise disruption and maintain the best possible learning experience for our pupils and families."
