<p><br /> Headteachers threw down the gauntlet to a new Government, announcing they will refuse to administer national curriculum tests.<br /> </p><p><br /> The Key Stage 2 SATs are due next month, but teachers unions have confirmed they are planning to, "frustrate the administration of the tests."<br /> </p><p><br /> The National Association of Head Teachers and the National Union of Teachers voted overwhelmingly for the action.<br /> </p><p><br /> The tests in English and maths are due to be taken by 600,000 children on what is expected to be the first day for a new government. Teachers will remain in the classroom, but will not administer the exams.<br /> </p><p><br /> Labour and the Conservatives insist the SATs should stay. The unions argue the tests are bad for children and schools. Causing too much stress and undermining the work of Heads.<br /> </p><p><br /> Action is expected to start on 4th May, just two days before the country goes to the polls.<br /> </p>