Context: I didn't realize until now that the kids in school start having different classes for different subjects in 5th grade.
Speaker 1: I didn't know until the other day that kids have different teachers for different subjects starting in 5th grae.
Speaker 2: Yeah the older they get the more teachers they usually get. I think it's good because they get a variety.
Speaker 1: That's true.  I was a little startled b/c I don't remember changing classes for things until 7th grade.  Just a reminder that kids grow up so much faster now.
Speaker 2: Yeah schools definitely start things younger now. Kindergarten used to be voluntary back in the day!
Speaker 1: That's true - when I was in kindergarten, we only went for half the day.