Three-grade boost for one in 10 A-level students after algorithm axed Private and grammar school pupils were biggest winners from change to using teachers' predictions, report by watchdog concludes 29 July 2021 • 8:00pm One in 10 A-level students was given a three-grade boost after teachers' predictions replaced a controversial algorithm last summer, an official report has found. The report, by exam watchdog the Office of Qualifications and Examinations Regulation (Ofqual), found that private and grammar school pupils were the biggest winners from the switch to predicted grades. Next month, pupils will be awarded teachers' predicted grades for A-levels and GCSEs for the second year in a row after exams were cancelled because of the Covid pandemic.