School districts (dis)established in the YYY0s category header is used to create categories of the form "School districts established in the YYY0s" or "School districts disestablished in the YYY0s", where YYY0s is a 4-digit decade.
e.g. Category:School districts established in the 1980s or Category:School districts disestablished in the 2010s
Usage
edit{{School districts (dis)established in the YYY0s category header}}
No parameters are needed.