Hey there pramod!
Thanks for dropping by. So, the big questions is what schools are good for you? I think that with your 680 and your age, top 20 schools will be out of the running. But no big deal! Not EVERYONE needs to go to a top school right? You need rather to reach your goal! Sooooo, schools I think you might look into given your goals:
Stretch: Marshall, Georgia Tech,
Competitive: Notre Dame, Simon, Mays, BU, Carrol,
Safe: Cox, Babson...
But please don't take JUST my word for it! There are a LOT of schools out there. I'd say your range is about in schools ranked 30-60, so look through those first. Look especially what their hiring rates are, which companies people go to, and which industries to see if it matches your goals.
Feel free to get back here with aaaaaany other thoughts you got.
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