The Oxford, Cambridge and RSA Exam board (OCR) launched an investigation into exam malpractice at the Yesodey Hatorah Jewish Voluntary Aided girls' secondary school after the NSS formally asked it to follow up unconfirmed reports that teachers had redacted questions in this year's GSCE science exam.

The precise questions that were blacked out has not been revealed by OCR, but earlier this year a Jewish education consultant warned that evolution in the new GCSE science curriculum could pose problems for strictly Orthodox schools.

The investigation confirmed pupils were left disadvantaged by being unable to access 3 marks out of 75 for a unit in a higher GCSE science exam, and 1 mark out of 75 for a unit on a lower paper.