Why is it acceptable for women to view porn?

in class today this girl was watching porn with her friends on her phone, it was a video, she gave her other friend one earplug and she had the other and i guess this boy was playing around and yanked her friends earplug and the whole thing came out and all you could her was moans and it was pretty obvious the girls were watching porn but our male teacher just KINDLY told them to ''put it away'', ddnt even come to check it out, but just last year with the same teacher some boys phone dropped and it had porn on it when Mr. Yenty picked it up and he called the boys parents, the boy got his phone tooken away and SUSPENDED for 5 days and I know for sure it was his first offense. Im just thinking why the hell can they watch porn and the class giggles and calls them lil freaks and cuties but when my friend did it hes just a plain ol creep!