Skinners ' boys generally take eleven General Certificate of Secondary Education ( GCSE ) tests in Year Eleven ( aged 15 -- 16 ) .
Boys have a choice of four or five A-levels in the sixth form .
Skinners ' boys generally take eleven General Certificate of Secondary Education ( GCSE ) tests in Year Eleven ( aged 15 -- 16 ) , and they have a choice of four or five A-levels in the sixth form .