Check out link
As soon as the show premiers it will have all the episodes up to date, streaming all very high quality. The videos will be continually updated every week. It also has bonus content and videos, and even places to discuss each episode!
Check it out, if you ever miss an episode , or want to re-watch it you can. All episodes are ONE complete part so no switching to another page, it starts instantly with no video advertising at all. WatchHSMusical is one of the greatest sites out there, which soon will be expanding to include all of your favorite shows!