Need to lose weight, willing to starve myself.?

i need to lose 15lbs before i got back to school (25th July 2011) i am willing to starve myself, take laxatives,throw up. unless theres another way????? diets dont work i did the 1200 calorie diet + 30 mins exercise and lose like 1 pound in a month it doesnt work. they take too long anyways.. im 15 in less than a month, 5'3 and 125lbs and want to be 110lbs by the 25th of july. any plans for me that will actually work?