, ▁which ▁en comp ass es ▁five ▁schools : ▁Mont ess ori ▁Ly ce um ▁Amsterdam , ▁Mont ess ori ▁College ▁O ost , ▁IV K O ▁School , ▁the ▁Cos m icus ▁Mont ess ori ▁Ly ce um ▁and ▁Am st elly ce um . ▁ ▁The ▁schools ▁main ▁entrance ▁is ▁located ▁on ▁Pi eter ▁de ▁Ho och stra at . ▁The ▁school ▁compr ises ▁four ▁main ▁buildings ▁and ▁one ▁building ▁across ▁the ▁road . ▁The ▁school ▁is ▁the ▁largest ▁of ▁the ▁" MS A " ▁schools , ▁it ▁has ▁ 1 5 2 6 ▁students ▁and ▁ 1 3 7 ▁teachers . ▁ ▁Stud ents ▁at ▁the ▁Mont ess ori ▁Ly ce um ▁Amsterdam ▁work ▁with ▁a ▁special ▁system ▁for ▁doing ▁their ▁school ▁work . ▁There ▁are ▁periods ▁of ▁nine ▁weeks ▁called ▁a ▁" blo k ". ▁In ▁this ▁period , ▁pup ils ▁need ▁to ▁complete ▁a ▁set ▁amount ▁of ▁home work . ▁Each ▁year ▁has ▁four ▁" blo k ken ". ▁ ▁History ▁In ▁ 1 9 2 8 , ▁some ▁parents ▁set ▁up ▁the ▁` Foundation ▁for ▁Senior ▁and ▁Pre par atory ▁High ▁Mont ess ori ▁education ▁'. ▁On ▁ 1 1 ▁September ▁ 1 9 3 0 ▁the ▁school ▁started ▁its ▁first ▁day . ▁. ▁On ▁the ▁second ▁floor ▁of ▁a ▁house ▁at ▁De ▁La ir ess estra at ▁ 1 5 7 ▁fifteen ▁students , ▁two ▁execut ives ▁and ▁eight ▁teachers ▁started ▁the ▁less ons . ▁. ▁This ▁was ▁unique ▁because ▁Maria ▁Mont ess ori ▁( who