First Amendment right of a Ballet School to Choose Its Students?

[David Bernstein]

Does a ballet school have a First Amendment artistic freedom right to
"discriminate" on the basis of height and weight?

 Story:  A young woman named Fredrika Keefer has trained most of her nine
years to realize her dream of becoming a ballerina.  But her dream might not
come true. A prestigious ballet school in San Francisco has rejected her,
allegedly because her body type doesn't fit their idea of what a ballerina
should look like.  Now Fredrika's mother has filed a complaint, using a new
San Francisco law that prohibits discrimination based on height and weight.

David Bernstein