BUSINESS

Thousands of high school alumni are created by students that graduated from a particular class.. and fizzle out after a period. 
An effort for the mother ship to reach out to all classes would be a good project.

Other than an alumni for all who went to the same school is one factor. With them are many sub groups, FFA, Cheer leaders, Bands ...

There could be a directory that lists alumni groups for each class and all sub groups.

High school alumni have a business element. They have paid memberships, take donations, sell things, rent places to do things.
The bulk of those who latch on to an alumni do so out of emotional connections and friendship I would guess.

No different than kid's sports .. families donate time and money. They sell things 
How are college fraternities and sororities structured ?

Is there some kind of paper work filed courts. What is a charter?
Is the LHS alumni on facebook connected to or regulated by the high school?

Will this group continue  years after the founders who started it?

Fraternities and sororities are structured to help their members in business and other support through the years.

I am not sure where to go from these thoughts. I will publish this page, then revert to draft and come back another day.