He is a specialist in that field.

He has expert knowledge.

He is a specialist fool, with no interest in anything outside his field.

He couldn't say anything about issues outside of his field of expertise.

There are many different specialty stores in this town.

My university is in Tokyo.

My high school has very strict rules.

My younger brother is learning cooking at a vocational school.

My sister is attending a boarding school.

My child goes to a public school.