I am fully inspired
I do agree, the track does fit the voice. I like your wit and humour in the announcement, and to be honest, I feel that kids would be inspired because of you.
I think you could have added to the announcement. Now, I am not saying that simply because of the soundtrack :P, but perhaps you could have been more specific, like referencing specific things you should learn in school. Hehe, something like "Do you have any idea how I managed to take down the final boss in Metal Gear solid 3? I used the Pythagorean Theorem..." If time is a constraint for this track, then I think you did everything you could in 48 seconds.
Overall, loved it, but I think you could have extended it.