This is the 4380th most frequent Japanese word.
各校
"各校" means "each school" or "every school."
The term "各校" refers to 'each school' in this context, highlighting that the activity (hosting a sports day) is organized independently at multiple schools.
各校が運動会を開催します。
Each school is hosting a sports day.
Here, "各校" signifies 'each school', emphasizing distribution to students belonging to different individual schools.
このプログラムは各校の生徒に配布されます。
This program will be distributed to students of each school.
In this instance, "各校" means 'each school', identifying that representatives from all schools are involved in the meeting.