Royal Belfast Academical Institution
（重定向自RBAI）
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The Royal Belfast Academical Institution, is a grammar school in Belfast, Northern Ireland. Locally referred to as Inst, the school educates boys from ages 11 to 18. It is one of the eight Northern Irish schools represented on the Headmasters' and Headmistresses' Conference. The school occupies an 18-acre site in the centre of the city on which its first buildings were erected.