▁number ▁of ▁A - level ▁subjects , ▁as ▁well ▁as ▁GC SE ▁History ▁and ▁F SM Q ▁Add itional ▁Mathemat ics . ▁In ▁November ▁ 2 0 0 6 , ▁it ▁was ▁jud ged ▁to ▁be ▁" out standing " ▁by ▁OF ST ED . ▁ ▁House ▁system ▁ ▁In ▁ 1 9 0 7 , ▁head master ▁Frank ▁Rog ers ▁set ▁up ▁the ▁system ▁of ▁" H ouses " ▁— ▁Holland , ▁named ▁for ▁Ph ile mon ▁Holland ; ▁M ild may , ▁for ▁Sir ▁Walter ▁M ild may ; ▁Str utt , ▁for ▁Joseph ▁Str utt ; ▁and ▁T ind al , ▁for ▁Nicholas ▁Con y ng ham ▁T ind al , ▁div iding ▁the ▁school ▁into ▁four ▁forms ▁in ▁each ▁year . ▁Due ▁to ▁the ▁expansion ▁of ▁the ▁school ▁roll ▁over ▁the ▁last ▁few ▁years , ▁this ▁has ▁not ▁been ▁the ▁case . ▁Instead , ▁there ▁are ▁five ▁forms , ▁which ▁contain ▁a ▁mix ▁of ▁people ▁from ▁different ▁houses . ▁ ▁Ext rac urr icular ▁activities ▁ ▁Com b ined ▁Cad et ▁Force ▁and ▁Corps ▁of ▁Dr ums ▁ ▁The ▁school ▁maintain s ▁an ▁Army ▁cont ing ent ▁of ▁the ▁Com b ined ▁Cad et ▁Force ▁( CC F ), ▁which ▁was ▁also ▁open ▁to ▁students ▁of ▁Ch el ms ford ▁County ▁High ▁School ▁for ▁Girls ▁until ▁ 2 0 1 7 . ▁Military ▁music ▁is ▁provided ▁within ▁the ▁cont ing ent ▁by ▁a ▁Corps ▁of ▁Dr ums ▁playing ▁drums , ▁fl utes ▁and ▁bug les . ▁The ▁Corps ▁we