The intention behind this, as reported by Education Business in July is to provide up-to-date information to parents submitting application forms for secondary school places this month for September next year.
Headteachers have warned that the provisional tables may paint an ‘inaccurate and incomplete picture’ to parents, as the data does not take into account the appeals process, which occurs after Results Day. In 2014, more than 54,000 GCSE grades were changed after being challenged.
Brian Lightman, general secretary of the Association of School and College Leaders, expressed this concern by saying: "It's not uncommon for schools to have several grades altered after challenges to results, and this can have a dramatic effect on performance tables.
"There is a real risk that the information being published early will not accurately reflect the achievements of some schools, and this may have a damaging effect on them and give parents an impression which is not correct."
The Department for Education data includes the percentage of pupils achieving five or more GCSEs at grades A* to C, including English and maths. The figures will also showcase the percentage of pupils achieving the English Baccalaureate (GCSEs at grades A* to C, including maths, English, two science qualifications, a foreign language and either history or geography).
Full secondary school league tables will be published in January as usual.