Welcome to Newgrounds
I say that because I've seen this way before from a link from Toon Zone. I frequent the silver age of animation and I got the link there I believe.
First thing first though. Good job on music and sound effects. The music fit in perfect from Powerhouse to the Jeopardy theme. The music played when Bug's Bunny maded his bow I think should had been cut a little earlier then playing the whole song. I like the J. Frog song played at the play Bunny scene.
The animation brings me back to the good days. I love the way you did all of it. The only thing that irked me was the classroom scene. Something about the way the sat felt wrong. But other then that kudos to you.
All in all good stuff. You should think about doing an Animaniacs one, lol