There should be an episode where they get their yearbooks and Cory and Topanga pull out their old ones and play Where Are They Now while Riley and Maya worry about where they are going to be in 15 years.
Then the gang see’s a picture of Feeney and Cory and Topanga finally tell the kids all about George and everything he did for them.
“Kind of like you, Mr Matthews?”
“No. Way more than me.”