the university of maryland, college park, has a good technical program. i went there, and while there is only one class for stage management, there are a lot of opportunities to actually stage manage plays, dance performances, and opera. i got some experience working with professional stage managers and directors, and most of the theatre faculty work in DC in professional theatre, so it's a good place to make contacts. one of the first professional shows i ASMed had a cast member and a designer who were my former teachers.
i had a great experience at maryland, and would highly recommend it.