What does the SK stand for on Johnny's jacket?

[sgiove]

I thought it might be something to with the football team name (Storming Knights?) or the name of the highschool, which is obviously not Woodinvale High since that wouldn't make sense if "SK" is on the jacket.

I might actually PM Jason Hill on Boardgamegeek.com and ask. I've PMed him once before and he responded quickly.

However, I'm still interested to hear other people's thoughts.