Stadium 1 did much more. It forces you to realize that some Pokemon are better than others, the value of good switches, and to look for optimal moves and optimal variety of moves (Even though in RBY that amounted to putting Body Slam and Thunder Wave on everything, the principle suck). I learned a lot of the basic mechanics through old strategy guides or experience.
Earl's Academy was wonderful and should definitely return in some form, though. It promotes smart thinking and explains mechanics in a clear way, and lord knows we need a lot more of that. That and it gives the series actual target audience a helping hand in understand why the later game might be destroying them.