. ▁ ▁Ext ensions ▁( late ▁ 1 9 5 0 s ) ▁ ▁By ▁the ▁late ▁ 1 9 5 0 s , ▁over c row ding ▁yet ▁again ▁led ▁to ▁a ▁renew ed ▁building ▁program . ▁Cont rib uting ▁to ▁the ▁over c row ding ▁was ▁the ▁increased ▁numbers ▁of ▁boys ▁who ▁were ▁returning ▁after ▁Junior ▁- ▁a ▁reflection ▁of ▁changed ▁social ▁expect ations ▁and ▁economic ▁circumstances . ▁Exp ansion ▁in ▁the ▁senior ▁school ▁was ▁accommod ated ▁by ▁further ▁extensions ▁to ▁the ▁Main ▁Building . ▁Two ▁d orm itories ▁with ▁show er ▁blocks ▁and ▁new ▁Brothers ' ▁rooms ▁were ▁constructed ▁over ▁pre - ex isting ▁ref ect ory ▁extensions . ▁In ▁addition ▁to ▁these ▁extensions , ▁three ▁new ▁class rooms ▁to ▁the ▁rear ▁of ▁the ▁tennis ▁courts ▁were ▁constructed . ▁ ▁The ▁architect ▁for ▁this ▁work ▁was ▁Frank ▁C ull en , ▁a ▁nep hew ▁of ▁Arch bishop ▁Du h ig , ▁who ▁had ▁comm enced ▁his ▁career ▁in ▁ 1 9 2 8 ▁as ▁an ▁art ic led ▁pup il ▁of ▁H enn ess y , ▁H enn ess y ▁and ▁Co , ▁Br is b ane . ▁He ▁established ▁his ▁own ▁practice ▁in ▁ 1 9 3 6 . ▁C ull en ▁under to ok ▁many ▁works ▁for ▁the ▁Catholic ▁Church ▁in ▁Queensland . ▁ ▁New ▁Senior ▁Second ary ▁School ▁( 1 9 6 5 - 6 7 ) ▁ ▁The ▁largest ▁and ▁most ▁significant ▁structure ▁away ▁from ▁the ▁Main ▁Building ▁is ▁the ▁Senior ▁Second ary ▁School , ▁ere