All the UK schools do, proxus, although they choose their own split by subject (I teach for one of them). It is a distortion of the rules introduced by the UK CAA that I believe they forced the JAA to accept, so as to make the system more reasonable. Note on some days students might still take 4 exams. The 14 are sat on a 4-day timetable; for first sitting the student will only take half, but 4 might be on the same day.