The school is an academy attended by about 1,600 pupils, rated outstanding by Ofsted.
The parent, whose child is an A-level student at the school, explained the initial email, titled GCE A Level Exam Grade Boundaries Summer Series 2023, outlined how students could review their own grades.
“This email included four attachments which detailed the grades received by each and every pupil in the sixth form at John Taylor High School, identified by name and surname as well as not only the grade, but also the individual marks,” he said.
