The NASUWT later estimated that around 15,000 people had taken part in a march organised in London.
Today's strike action has been a great success and is an indication of the anger and concern that teachers share about the changes this Government is making to the profession.
Strike action does of course always come at a price and we are very well aware of the disruption this causes to parents' working lives as well as their children's education.
Michael Gove has demoralised an entire profession and today's action is a direct result of his and the Government's steadfast refusal to accept there are problems that need to be resolved.
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The film had formed part of a commemoration to the Choucair family, three generations of whom died in the fire.
John Nolan, who was found with cigarettes and two lighters, suffered burns on 65% of his body after being alight for around six minutes.
Known as Pily she died in January, seven months after the disaster, having suffered a stroke.