I just read the linked page. To my advantage, the protagonists are only about four years younger than me. On the not-so-good side, in their version of ’real life,’ my protagonists are all pushing 50, hard. I don’t remember all the ‘slang’ from then, and I didn’t use it then. The site is a good one, though, and I’ll keep reading through it.
The entire school-age ‘ensemble’ will be introduced by Chapter 17, and ‘revealed’ in Chapter 18.