old town school of folk music
wiggleworms cannot be beat for little kids classes. One thing I truly appreciate is they have classes that include siblings. as for those of us with more than one child it can be a pain to sign a child up for a class to then have to find childcare for others.
Old Town School of Folk Music also offers classes for teens and adults. Also the have unique concert offerings and open mic night for teens.
It is more than just music classes though... there are dance offerings and yoga.... more than I can describe!