▁land ▁in ▁the ▁can y ons ▁proper , ▁was ▁sold ▁to ▁the ▁Forest ▁Service , ▁and ▁is ▁now ▁part ▁of ▁the ▁C ib ola ▁National ▁Forest ▁and ▁the ▁Sand ia ▁Mountain ▁W ilder ness . ▁The ▁Academy ▁retained ▁two ▁parts ▁of ▁the ▁tract , ▁the ▁larger ▁ad jo ining ▁Tr am way ▁Bou lev ard . ▁The ▁school ▁set ▁up ▁the ▁High ▁Des ert ▁In vest ment ▁Corporation ▁( HD IC ) ▁to ▁develop ▁this ▁portion ▁as ▁the ▁master - pl anned ▁community ▁known ▁as ▁High ▁Des ert . ▁( The ▁smaller ▁portion , ▁within ▁Bear ▁C any on ▁itself , ▁is ▁still ▁used ▁by ▁the ▁Academy ▁for ▁exper ient ial ▁education ▁purposes .) ▁HD IC ▁then ▁purchased ▁a ▁large ▁tract ▁of ▁land ▁in ▁the ▁northern ▁section ▁of ▁Rio ▁Ran cho , ▁developed ▁as ▁Mar ip osa . ▁The ▁proceed s ▁from ▁the ▁land ▁sales ▁and ▁from ▁HD IC ▁have ▁provided ▁the ▁Academy ▁with ▁a ▁substantial ▁end ow ment , ▁which ▁is ▁used ▁partly ▁to ▁def ray ▁tu ition ▁exp enses ▁and ▁to ▁subs id ize ▁a ▁significant ▁need - based ▁financial ▁aid ▁program . ▁HD IC ▁has ▁since ▁been ▁dissol ved . ▁ ▁The ▁school ▁remained ▁an ▁all - bo ys ▁school , ▁with ▁gr ades ▁five ▁through ▁ 1 2 , ▁until ▁ 1 9 7 3 , ▁at ▁which ▁time ▁girls ▁were ▁allowed ▁into ▁gr ades ▁nine ▁through ▁ 1 2 . ▁Part ▁of ▁the ▁reason ▁for ▁the ▁delay ▁in ▁allowing ▁girls ▁and ▁for ▁the ▁grad ual ▁inclusion ▁was ▁that