چرا در یک جا عنوان شد in school و یک جاat school
We actually use both in school and at school , for slightly different situations.
At school means the person is literally, physically, inside the school .
In school means the person is studying in general (usually at college or university) but not necessarily inside the school building at that moment.
Yes, you did.
She is a good student at school.
تو این جمله چطور؟ داره میگه او در مدرسه دانش آموز خوبیست؛ به این معنی نیست که او الان به طور فیزیکی تو مدرسه است
ولی at استفاده شده؟