The TUC demo on 26 March started to mobilise people for what everyone knew would be the battle ahead. Better organised schools had delegations on the demo and returned back to school more confident that they were part of a much bigger movement.
But the real momentum started after NUT conference over Easter, spurred on by the fact that another teaching union, the ATL, had voted unanimously to ballot for strike action. This is a union that has never taken strike action in its 127-year history. The feeling was, if they are prepared to strike then things have really shifted.