。
She asked about my school.
Literal
She [topic-は] my school [about-について] asked.
尋ねる (or たずねる, written here in kana) is a more deliberate, slightly formal verb than the everyday 聞く ('ask'). It suggests a question asked with intent — for information, clarification, or to satisfy curiosity — rather than a casual passing inquiry. The compound particle ~について ('about, concerning') is the standard way to mark the subject matter of an inquiry, discussion, or written piece. Note the kana spelling たずねる over 尋ねる: a frequent stylistic choice that softens the slightly formal tone.