。
She talked about her school life.
Literal
She [topic-は] school-life [about-について] told.
語る ('to tell, narrate') is a slightly literary alternative to 話す ('to talk, speak'). Where 話す is everyday conversation, 語る carries a sense of recounting — telling a story, narrating an experience, giving a substantive account. You'll see it more in headlines, novels, and elevated speech: 体験を語る ('recount one's experiences'), 真実を語る ('tell the truth'). ~について ('about / regarding') marks the topic. The whole sentence has a slightly formal, almost interview-feel — as if she were giving a recorded account rather than just chatting.