▁ 1 8 8 9 . ▁On ▁ 1 ▁January ▁ 1 9 0 9 ▁it ▁was ▁became ▁Summer ▁Hill ▁State ▁School . ▁In ▁ 1 9 4 4 ▁it ▁was ▁renamed ▁Summer holm ▁State ▁School . ▁It ▁closed ▁circa ▁ 1 9 5 5 . ▁ ▁References ▁▁ ▁Category : Lock yer ▁Valley ▁Region ▁Category : Local ities ▁in ▁Queensland <0x0A> </s> ▁A ▁black out ▁ ▁during ▁war , ▁or ▁in ▁prepar ation ▁for ▁an ▁expected ▁war , ▁is ▁the ▁practice ▁of ▁collect ively ▁minim izing ▁out door ▁light , ▁including ▁up ward ly ▁directed ▁( or ▁reflected ) ▁light . ▁This ▁was ▁done ▁in ▁the ▁ 2 0 th ▁century ▁to ▁prevent ▁cre ws ▁of ▁enemy ▁aircraft ▁from ▁being ▁able ▁to ▁identify ▁their ▁targets ▁by ▁sight , ▁for ▁example ▁during ▁the ▁London ▁Bl itz ▁of ▁ 1 9 4 0 . ▁In ▁coast al ▁regions ▁a ▁shore - side ▁black out ▁of ▁city ▁lights ▁also ▁helped ▁protect ▁ships ▁from ▁being ▁seen ▁in ▁sil hou ette ▁against ▁the ▁shore ▁by ▁enemy ▁sub mar ines ▁farther ▁out ▁at ▁sea . ▁ ▁In ▁actual ▁war fare , ▁according ▁to ▁M . ▁R . ▁D . ▁Foot , ▁black outs ▁did ▁not ▁imp air ▁navigation ▁by ▁bom bers ▁because ▁navig ators ▁focused ▁more ▁on ▁reflect ive ▁bodies ▁of ▁water , ▁rail road ▁tracks , ▁or ▁large ▁high ways — the ▁chief ▁purpose ▁was ▁to ▁mobil ize ▁the ▁entire ▁civil ian ▁population , ▁and ▁provide ▁a ▁test ▁to ▁make ▁sure ▁they ▁obey ed ▁the ▁rules .