質問 for any Americans/people who understand the American education system...

Before Kindergarten is preschool. kids can start preschool at 3 years old. Usually they're in kindergarten at 5 years old.

Head start.
Preschool.
Daycare.
All the same.
That's usually what people go to before
Kindergarten.

Yes, We do have Head start which is basically Pre-school. Getting the children ready for kindergarden.

As others said, there's headstart and preschool, but those are optional. I didn't go to preschool, but it's becoming もっと見る and もっと見る popular.
Is Reception mandatory または optional in Britain? Just curious, I'd never heard of it before.

Yes, Preschool または Pre-K is what it is called. It is pretty much learning the alphabet, colours, and numbers.

preschool

before kindergarten is pre school. It can be either be like an actual school, または in my case 日 care. The daycare I went to had a pre school set up to it once あなた were out of the baby and toddler rooms. If あなた go to pre school that's generally one 年 then あなた graduate up to kindergarten and actually start elementary school.

Why have school before school? To get extra smart または to put あなた somewhere while your parents are at work/etc? What is the point of it?