Although it's certainly not necessary to find a homeschool class in order to learn art or Lego building, it's nice to have the option to take classes during the day instead of having to wait until late afternoon when most programs schedule their offerings.
Paintbox Kids is one of the homeschool friendly businesses around L.A. that have classes during the day for kids up to 11 years old. Besides their preschool art and language classes during the day, they also offer classes for older children in art and Lego engineering.
The prices are about average for these kinds of classes.
And don't miss out on their various one-time workshops for all different kinds of crafts and activities.