[purple-again]

Does that mean they took an 18 year old and put him back in class with 15 year olds expecting him to stay there for four more years from 19-22? That can’t be right. What does sent him back to the 9th grade mean in this context?

[tyingq]

It varies in the US, but 21 is commonly the maximum age to be in a public high school.

State by state data: https://nces.ed.gov/programs/statereform/tab5_1.asp

Texas allows up to age 26...heh.

[quantumsequoia]

This lists the "maximum age limit to which free education must be offered" which may not be the same as the "maximum age limit to which free education can be offered"

It's possible at age 22 the state is not required to provide him an education, but chooses to do so anyways

[tyingq]

It's a little hard to summarize as the rules are complex and different for each state.

Here's Texas, for example: https://statutes.capitol.texas.gov/Docs/ED/htm/ED.25.htm

[thatguy0900]

I would assume he would just have to get a ged at that point right?