If you have to, you could always ask her something about recent events in the school/college/area and what's up with that, eg. if an area is being cordoned off for construction or there was a fight.
That's a fairly softball topic that could branch into talking about what she likes, about life in the area, or basically whatever. Though if it's a zoomerfoid the chances are that she's functionally illiterate and is unable to meaningfully answer basic questions
Generally safer not to talk about studies, but if you could direct it into a convo about hypotheticals it might have a bit of mileage eg. future plans, what she's looking to study or work in later, what subjects she would like to study but they aren't academically valuable (eg. theatre, dance, film, or w/e). You can make up some shit like, 'My friend went to a fortuneteller to help with his choice of subjects,' or, 'The teacher in eg. Psychology was telling us about how we should pick subjects based on personality types. Like, he said I should consider x, because it suits me, but honestly I'm not sure. ' Problem with talking about studies is it's too generic, the convo is unlikely to last much if you're anxious, and it rarely becomes particularly personal or stimulating to her
Obviously depends on if it's college or school or w/e else, as well. But probably not that different
Since she's not attracted to you, it probably won't have that much of an impact on her. But if she's at least a bit engaged with it, at least you'll enjoy it and might get the chance to talk again ig