This sounds like the sort of "boys can, girls can't" stuff that my daughter had to deal with from her grade 7 math teacher. 

He was a jock who should have spent more time learning the subject he was trying to teach than trying to make himself feel good that he was born male. 

My daughter had to constantly correct his bonehead math errors in class.

He did not respond well, particularly when she went on to win the Regional Gauss Math competition medal for the 3rd year in a row despite his inability to comprehend the subject he was trying to teach. My wife and I helped her with the Gauss Practice exams when she could not intuit the correct algorithm on her own.

She ended up being fully funded by MIT for her PhD, and also go an NSERC fellowship. 

This summer she is on an Arctic Scientific Research Cruise.