Is a bit confusing to me.
I grew up in Germany with a developed soccer club system. From kids to adult you play for a ( or many depending on your loyalty ) club where you have your practice and soccer games against other clubs more or less regional depending on skill level. Schools are rarely involved at all.
Now that I’m settled here in Maine. I picked up being a soccer referee. I took a course and started refereeing Middle and Highschool games. Those are fall season with roughly 2 months of games every day (at least for referees) .
Then I took another course to referee club soccer games, which are organized by local soccer clubs more similar to the german system with a spring and fall season. I accidentally also came to be the referee assignor for my local club instead of just a referee.
It is all still a it confusing to me why there are so many different organizations in competition of soccer talent. But that’s the way it is. And I’ll try to make my way up the referee ladder 😉