Indeed this headline is editorialized against HN guidelines. The original headline is:

"To Promote Equality, California Proposes a Ban on Advanced Math Classes"

and it seems, at least upon quick inspection, to be factually accurate (although the article content itself is far from neutral).

@dang if you get a moment this headline could benefit from reverting to the source headline.

EDIT: Actually after digging another layer down in the linked sources, I'm not sure even the "proposes a ban" is factually substantiated though it's hard to tell for sure without going one layer yet deeper and scanning through a 300 page report.