▁in ▁ 1 9 8 2 ▁by ▁the ▁re - mer ger ▁of ▁Sl ough ▁Gram mar ▁School ▁for ▁boys ▁( 1 9 3 6 – 8 2 ) ▁and ▁Sl ough ▁High ▁School ▁for ▁girls ▁( 1 9 3 6 – 8 2 ), ▁when ▁the ▁High ▁School ' s ▁T win ches ▁Lane ▁site ▁was ▁sold ▁for ▁re development . ▁The ▁combined ▁school ▁was ▁renamed ▁U pton ▁Gram mar ▁School ▁to ▁under line ▁the ▁mer ger ▁of ▁two ▁equals . ▁Sl ough ▁Gram mar ▁and ▁Sl ough ▁High ▁had ▁both ▁been ▁formed ▁in ▁ 1 9 3 6 ▁from ▁the ▁split ▁of ▁Sl ough ▁Second ary ▁School ▁( 1 9 1 2 – 3 6 ). ▁ ▁Head ▁teachers ▁ ▁Mr ▁Ger ald ▁H ▁P ain ter , ▁M Sc , ▁F Inst P ▁( 1 9 8 2 – 8 8 ) ▁having ▁started ▁as ▁Head master ▁of ▁Sl ough ▁Gram mar ▁School ▁for ▁Boys ▁in ▁ 1 9 6 6 ▁ ▁Mrs ▁Margaret ▁A ▁L ent on , ▁B A , ▁FR SA ▁( 1 9 8 8 – 9 3 ) ▁and ▁continued ▁with ▁Sl ough ▁Gram mar ▁School ▁until ▁ 2 0 1 0 ▁ ▁Sl ough ▁Gram mar ▁School ▁( 1 9 9 3 – 2 0 1 3 ) ▁In ▁ 1 9 9 3 , ▁U pton ▁Gram mar ▁School ▁was ▁renamed ▁back ▁to ▁Sl ough ▁Gram mar ▁School , ▁while ▁retain ing ▁its ▁co - ed uc ational ▁status , ▁the ▁previous ▁school