▁in ▁ 1 9 3 6 ▁from ▁the ▁split ▁of ▁Sl ough ▁Second ary ▁School ▁( 1 9 1 2 – 3 6 ) ▁into ▁Sl ough ▁Gram mar ▁School ▁for ▁boys ▁( 1 9 3 6 – 8 2 ) ▁and ▁Sl ough ▁High ▁School ▁for ▁girls . ▁ ▁For ▁the ▁first ▁three ▁years ▁of ▁its ▁existence , ▁it ▁occupied ▁the ▁former ▁Sl ough ▁Second ary ▁School ▁buildings ▁in ▁William ▁Street , ▁but , ▁in ▁ 1 9 3 9 , ▁it ▁moved ▁to ▁new ▁buildings ▁in ▁T win ches ▁Lane , ▁Ci ppen ham . ▁ ▁In ▁ 1 9 8 2 , ▁when ▁the ▁T win ches ▁Lane ▁site ▁was ▁sold ▁for ▁re development , ▁Sl ough ▁Gram mar ▁School ▁and ▁Sl ough ▁High ▁School ▁merged ▁to ▁form ▁U pton ▁Gram mar ▁School ▁( 1 9 8 2 – 9 3 ), ▁based ▁on ▁the ▁Las cell es ▁Road ▁site ▁of ▁Sl ough ▁Gram mar ▁School . ▁ ▁Head m ist ress es ▁ ▁Miss ▁J ▁M ▁C raw ford , ▁MA ▁( 1 9 3 6 – 6 2 ) ▁ ▁Miss ▁G w yn eth ▁R ▁J ▁O wen ▁( 1 9 6 2 – 7 8 ) ▁ ▁Miss ▁Pam ela ▁A ▁Re akes , ▁B A ▁( 1 9 7 8 – 8 2 ) ▁ ▁U pton ▁Gram mar ▁School ▁( 1 9 8 2 – 9 3 ) ▁U pton ▁Gram mar ▁School ▁in ▁Las cell es ▁Road , ▁Sl ough , ▁was ▁formed