I don't like anything high.... going forward few pitches will be called strikes and few players will bite on the high pitch. middle school and high school players will sometimes bite at a high strike. The theory here is that the PC is relying on the batter to swing and get himself out. Umpires will seldom call this pitch a strike for a punch out in high school. They will however call a pitch a little in or a little out a called strike and even then the batter may take a cut.
If you pitch at the knees with a good slider, going high will also open you up for a hit batter, a pass ball etc...
My idea on a 0-2 is not to waste a pitch but make sure that it is at least a setup pitch if you do not get the out. . 1-2 go after him.