, ▁award - win ning ▁master - p ain ter ▁Ma ury cy ▁Tr ę b acz , ▁Iz rael ▁Le j zer ow icz   ( pl ) ▁– ▁one ▁of ▁the ▁most ▁prom ising ▁expression ists ▁of ▁the ▁new ▁generation ▁– ▁killed ▁at ▁Aus ch witz , ▁and ▁numerous ▁others . ▁Jewish ▁children ▁were ▁mainly ▁en rolled ▁in ▁religious ▁schools . ▁During ▁the ▁school ▁year ▁of ▁ 1 9 3 7 – 1 9 3 8 ▁there ▁were ▁ 2 2 6 ▁elementary ▁schools ▁and ▁twelve ▁high ▁schools ▁as ▁well ▁as ▁four teen ▁voc ational ▁schools ▁with ▁either ▁Y idd ish ▁or ▁Heb rew ▁as ▁the ▁instruction al ▁language . ▁A ▁network ▁of ▁ 2 1 9 ▁sec ular ▁Y idd ish ▁language ▁schools ▁was ▁run ▁by ▁T SY SH O ▁( Cent ral ▁Y idd ish ▁School ▁Organ ization ) ▁with ▁ 2 4 , 0 0 0 ▁students ▁in ▁ 1 9 2 9 . ▁The ▁Real g ymn az ye ▁run ▁in ▁Wil no ▁by ▁T SB K ▁( branch ▁of ▁T SY SH O ) ▁was ▁the ▁first ▁modern ▁high ▁school ▁in ▁history ▁in ▁which ▁Y idd ish ▁was ▁the ▁language ▁of ▁instruction . ▁ ▁See ▁also ▁ ▁Central ▁Indust rial ▁Region , ▁one ▁of ▁the ▁biggest ▁economic ▁projects ▁of ▁the ▁Second ▁Polish ▁Republic ▁ ▁Sz ta f eta ▁book ▁of ▁analysis ▁written ▁by ▁Mel ch ior ▁Wa ń kow icz ▁ ▁German – Pol ish ▁custom s ▁war ▁( 1 9 2 5 – 1 9