Question

why do we use prepositions in school and at home. difference of in school and at school​

Answer 1

At school means the person is literally, physically, inside the school. ... “He's at school. His classes finish at 3:30.” In school means the person is studying in general (usually at college or university) but not necessarily inside the school building at that moment.

Answer 2

$\huge\boxed{\underline{\mathcal{\red{❥A}\green{N}\pink{S}\orange{W}\blue{E}\purple{R}}}}$

At school means the person is literally, physically, inside the school. ... “He's at school. His classes finish at 3:30.” In school means the person is studying in general (usually at college or university) but not necessarily inside the school building at that moment.