Answer:
(Fatwa: 659/606=L/1429)
A teacher may beat young students but only three bearable slaps avoiding the head and face, more than this is not allowed, otherwise these students will be entitled to take revenge on the Day of Judgement. So, it was wrong if the teacher hit so hard that her spectacles fell. One should teach students with politeness and affection.
Allah (Subhana Wa Ta’ala) knows Best
Darul Ifta,
Darul Uloom Deoband
