Schools on the Isle of Wight plan to question some A-level grades, after students got far lower grades than they were expecting.
Many pupils doing AQA English Literature received good coursework marks, but some got Ds, Es and even Us in their exams, dragging their overall mark down.
Teachers say harsh marking may be to blame.
Speaking to Isle of Wight Radio, Assistant Vice-principal at Sandown Bay Academy said 'there's been pressure on the exam boards to be more severe this year, and that seems to have manifested itself in this particular module'.
'The critical thing from our point of view is that the students haven't been hampered in their access to university.
'All of the students in this particular group have been advised, we've been on the phone to universities and they have got their places.'
Sandown Bay Academy intends to ask AQA to take a second look at the papers.
'In previous years when there's been anomalous results like this we've had the entire lot re-marked by the exam board, in some cases with the result that grades have gone up, so we will be looking into doing that', Mr Addyman said.
An AQA spokesperson told Isle of Wight Radio, 'if any school or college has concerns about their results, they should contact us as soon as possible so that we can look into it.'
'We have well established procedures, and an experienced team, to deal with such issues.'