12,000 teenagers sitting their UK High School (GCSE) music exam last week had an advantage previous student didn’t have, all the answers were printed on the back.

Reuters reports that the error was only notice after the exam had been sat, but won’t be forcing students to resit the exam because less than 5% of students noticed the answers.

According to a spokesman “All exam papers have a copyright statement dealing with source material on the back page…This one in particular had more detail than is usual in a music paper.”

So far there has only been 20 queries on the results from teachers, with officials noting that students may not have been able to recognize the answers. We say the UK education system has failed if students can’t spot the answers to an exam sitting right in front of them.