Do i need to get a managarial post or any low post? Its gonna be very tough to get a good post for me as i have just finished graduation?...also which schools should i apply to with 15 months experience?
No, I don't think you're very likely to get a lot of managerial experience as a new hire straight out of undergrad. Try to lead as many projects within your position as possible even if it's as simple as planning a company picnic, etc! Also, take the time to get invested in some good ECs. They're a lot easier to get into management roles and will help provide a crutch to your low WE. Also, obviously, make sure to kill the GMAT!