But about three-quarters of state secondaries across England are still planning to run the tests in English, maths and science next month because they have had no time to devise alternative assessments. Up to 60,000 pupils in London could be affected. Members of the Association of Teachers and Lecturers are calling for a boycott of Sats for 14-year-olds in schools where staff face the extra work of invigilating and marking hundreds of papers each.