Congratulations. I'll bet your son is bouncing off the walls, as he should be.
I think the interest is probably genuine.
It's easy to get all excited, I know, I was, and so was my son. My advice is, take a step back and ask, "is this school really somewhere that I want to go?". It takes a clear head to answer that objectively, and for me that was something easier said than done.

Best of luck, enjoy the ride.