(Situation: A boy has arrived at school. He is walking in the hallway. He is not wearing a school uniform. A teacher says to him, 'You should always wear your uniform to school.')

Question

1. You should always wear your uniform to school.

2. You should always wear your uniform at school.

3. You should always wear your uniform for school.

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Can we use all the prepositions?
What is the difference among them?

Answer 1

All of them work, but #1 is best.

#2 implies that he has other clothing at school in addition to his uniform.

#3 is a bit awkward, but the meaning comes through.