I'm a bio major, so the chemistry class dialogue needs some work. You most definitely need to memorize Avagadro's number. I also have a friend who did wrestling, and he quibbles  with the way you describe a "duck under"

Sprites look a bit weird, dialogue is long and janky. 

Also, if a captain said something that homophobic and a threat of violence, that's grounds for reporting to the school. That wouldn't be something that would get brushed over. His first instinct should not be to wonder if Kauri is also gay!