[nemo44x]

I did a lookup and a lot of places refer to what called “K4” as “Pre-k”. Where I grew up I had preschool and then K4 and then K5.

My son started preschool at 2.5. I guess anywhere between 2.5 and 3 is typical here. Then pre-k at 4.

[germinalphrase]

Where is "here"? In the upper midwest, "Pre-K"/"4K" is age four. Kindergarten is age 5. There is not typically anything earlier than that, and parents are on the hook to find their own daycare if not home with the child.

[nemo44x]

NYC has “3K for all”. All kids get free 3K now. Many surrounding areas (like in NJ) have new programs for this with coverage expanding.

Where I live it’s private. So parents send their kids to pre-school at 2.5-3. But by 4 the public schools will take them in.

[germinalphrase]

That’s interesting. Thanks.