Owned by actor Mimi Stuart (who has spent her career in the theater), the Children’s Acting Academy offers original programs in which drama kings and queens can flex their improv muscles, practice monologues and fine-tune their speech and diction. Professional actors give students a taste of what it takes to make it: For example, Creative Drama focuses on mime, improvization and other theatrical mediums, and Acting sharpens skills pertaining to interviews, monologues and TV commercials. The fall trimester ($55/class) comprises 10 to 12 courses, the last of which is a showcase in which kids can show off their dramatic chops. Children’s Acting Academy, Upper West Side