"We are very focused on getting the right result for students and we have a number of quality control systems in place during the marking process. We also carry out detailed analysis to continuously improve the quality of marking. However, unfortunately we don’t always get it right and if a school is unhappy with a student’s results, they can ask us to take another look.
“In most cases where a review leads to a change, the results will go up or down by only one or two marks. Significant increases are more unusual and automatically trigger a process where we look at all the school’s exam scripts in that subject.
“We appreciate how important exam results are to students and schools and we are very sorry if we don’t get it right first time.”
Record numbers of GCSE and A-level papers are set to be re-marked because some schools have concerns over the quality of grading.
One secondary in the South is adamant that 90 pupils have been given the wrong English grades - at another, in Sussex, hundreds of marks have been changed after being challenged.
One pupil's mark went up by FIVE grades. The biggest exam board has defended marking saying their processes are subject to strict quality control.
Our social affairs correspondent Christine Alsford spoke to: Steve Marshall-Taylor, Deputy Head at Brighton College; Brighton College pupils; Heather McIlroy, Executive Headteacher at The Mountbatten School, Romsey; and pupil Emma Rudge.
The leak revealed the names and marks of the undergraduates who achieved the lowest scores in exams taken before Christmas.
The exams are known as 'collections'. They're used to monitor students' progress and do not form part of the final degree mark.
Tens of thousands of 11-year-olds start a week of tests today to show what they've learned in primary school. This year there's a controversial new exam in grammar and punctuation which pupils sit for the first time tomorrow.
Our correspondent Christine Alsford put Fred and Sangeeta to the test!