) ▁which ▁was ▁affili ated ▁to ▁the ▁National ▁Education ▁Association . ▁ ▁There ▁were ▁other ▁smaller ▁teachers ▁un ions ▁active ▁before ▁ 1 9 7 0 ▁that ▁also ▁merged ▁into ▁U T LA . ▁Over ▁a ▁dozen ▁different ▁organizations ▁merged ▁to ▁form ▁U T LA . ▁ ▁The ▁first ▁broad ▁feder ation ▁of ▁Los ▁Angeles ▁School ▁District ▁teachers ▁was ▁the ▁Aff ili ated ▁Te acher ▁Organ izations ▁of ▁Los ▁Angeles , ▁formed ▁between ▁ 1 9 3 0 ▁and ▁ 1 9 3 2 . ▁ ▁U T LA ▁is ▁very ▁active ▁in ▁the ▁political ▁sphere ▁of ▁California , ▁especially ▁since ▁Proposition ▁ 1 3 , ▁which ▁sever ely ▁limited ▁the ▁amount ▁that ▁public ▁schools ▁can ▁receive ▁from ▁property ▁tax es . ▁ ▁This ▁shift ed ▁the ▁bur den ▁to ▁the ▁state ▁and ▁increased ▁the ▁competition ▁between ▁state ▁fund ed ▁groups . ▁ ▁The ▁union ▁has ▁also ▁advoc ated ▁strongly ▁against ▁school ▁v ouch er ▁programs ▁and ▁attempts ▁to ▁break ▁up ▁the ▁school ▁district . ▁▁ 1 9 8 9 ▁strike ▁On ▁May ▁ 3 0 , ▁ 1 9 8 9 , ▁approximately ▁ 2 0 , 0 0 0 ▁U T LA ▁members ▁went ▁out ▁on ▁strike ▁for ▁higher ▁pay ▁and ▁more ▁administrative ▁control . ▁▁ ▁The ▁strike ▁last ed ▁nine ▁days ▁starting ▁on ▁May ▁ 3 0 , ▁ 1 9 8 9 . ▁The ▁months ▁preceding ▁the ▁strike ▁were ▁highly ▁content ious . ▁ ▁N umer ous ▁neg ot iation ▁tact ics ▁were ▁deployed ▁by ▁both ▁sides ▁including ▁teacher