IPA: /ˌɪntərˈdɪstrɪkt/
KK: /ɪntərˈdɪstrɪkt/
Relating to or occurring between two or more districts.
The interdistrict collaboration improved educational resources for all students.
Interdistrict → It is formed from "inter-" (meaning between) and "district" (from Latin "districtus", meaning a division or area). The word "interdistrict" refers to something that occurs between different districts or areas.
Think of things happening 'between' ('inter-') different 'areas' ('district') — that's what interdistrict means.