it's insanely complex. Every single Step has to be exact. Also I don't think they didn't shoot anything else in that week. something else might have happened parallel to it. Some Sharpay and her Mom- only acting, no dancing scene or something. ALSO I think that number wasn't rehearsed beforehand since they seemed to go scene by scene there. All other dance numbers were rehearsed weeks before and only hat to be shot
Taro pero en la filmaciónes de high school musical estaba de novia en la vida real con Zac Efron desde 2006,y terminaron el 2010 :( y ahora está de novia con otro chico