Translation:A school has male and female students.
I think it's different, as most of the schools in that time were non mixed-sex schools (mixed is relatively new in the history). And even more than "most", I would say "all".
When I read a Roman school has girls and boys, it really bring more information for me. The schools having students, would bring zero info, as it's the normal definition for a school, to have students.
Because I'm studying The Latin languge, I can now understand the deeply meaning of some words in Portuguese. It has been such an fantastic experience! By the way, in Portuguese: in general, words ending in 'os' are [plural] masculine nouns and words ending in 'as' are [plural] feminine nouns. This may help you to comprehend a little more.