The poster, which included a rainbow flag, counts as 'instruction that includes sexuality content' according to the board.

A public high school teacher in Texas says administrators told him to remove a Black Lives Matter poster that was hanging in his classroom. "There are rules. It was a directive to take the sign down, ...

Welcome to Mashable's ongoing series which highlights trailblazing women in science, tech, engineering, and math, as well as initiatives and organizations working to close the industries' gender gaps.