More than 70 NUT union members struck at Langdon School in Newham on Thursday of last week.
The school was completely closed to pupils for the day.
The strike was called over workload issues and oppressive management by the headteacher.
Around 30 strikers picketed on both gates.
Union reps from nearby schools, as well as UCU lecturers, visited them.
There was an impressive list of messages of support from union members around Britain.
It showed that bullying and increasing demands on workload are a massive issue in schools and colleges.
A typical message read: “Your experience is all too common for teachers around the country and your decision to resist with collective action is an inspiration to all of us.”
Strikers were interviewed on BBC News—and they took the opportunity to send a message of support to the picket line at Broadcasting House the following day.