Members of the National Union of Teachers (NUT) are launching a campaign of action short of a strike, joining those in the NASUWT who are already taking action.
Industrial action by teachers over issues including pay, pensions and workload will be stepped up today amid warnings of an escalation in the coming months.
More top news
The Defence Secretary Michael Fallon repeatedly refused to confirm details of the test when he was summoned to the Commons.
Mrs Bush was hospitalised after experiencing fatigue and coughing and was admitted just days after her husband George H.W. Bush.
The Football Association has charged Arsenal manager Arsene Wenger with misconduct in the wake of Sunday's game with Burnley.