 Pupils in years 10 and 11 must study the Core Subjects as well as a choice of 4 other GCSE subjects.Years 12 and 13 have a choice to study either 3 or 4 AS/A Levels from any of the curriculum subjects.The Welsh Baccalaureate Qualification is also a part of the curriculum at Ysgol y Preseli, pupils in Year 11 will complete the Welsh Baccalaureate at Intermediate level and Advanced level in years 12 and 13.