Teachers at St Peter's Collegiate School in Wolverhampton will be taking three days of strike action from today, the NASUWT Teachers Union has said.
The union says it's over "adverse management practices including workload, health and safety and the failure to consult."
Teachers say it's a last resort, after their employer failed to address concerns.
Strike action has been planned for:
Union bosses say strike action "could have been avoided."
Meanwhile, the School say the majority of staff who are not taking part in the planned action will remain in school, "so that the students can continue to learn in a safe environment and do not have their education disrupted."