noun
one school
Refers to a single school as an institution. Often used in contexts comparing or counting schools.
この地域には一校しか中学校がない。
There is only one junior high school in this area.
The whole school worked together to prepare for the sports day.
noun
first proof; one round of proofreading
Publishing term for the initial proofreading pass. Also used more generally for a single proofreading check.
原稿の一校が終わったら、すぐに二校に取りかかります。
Once the first proof of the manuscript is done, we'll move on to the second proof right away.