OTB Tournament Composition

Don't know where else to address my question, so here it is.

I've returned to chess after several decades absence.  I've been examining attending rated tournaments.  Compared to the past, their composition is very different.

Currently, at least locally and in surrounding states, the bulk of tournaments seem to be for kids and females.  In my neck of the woods, I'd say that 70% of the state and club tournaments are limited to school aged kids and another 20% are women only.  That leaves about one in ten tournaments open to the general playing public ... without regard to gender or age.

My recollection was that the ancient balance was about 60% open to all players, about 10% women only, and about 30% for kids.

What happened?

Nothing happened, there are just more events for that age group.  I will be have my "got rating" events soon, you just caught the wave of scholastic events.

Good point.

Another good point, at least in our common state. 

As I look at some large national tournaments, they have concurrent women's only and multiple kids' events linked to them.  I'm probably going to attend the National Open in June; it has a woman's event and three kids' events.  I've just back and looked to our north and, upcoming, there are more open events.

Is springtime the time of year when there are a lot of scholastic tournaments? That could be what I'm seeing.