Financial talk

Okay, so I want to go to boarding school (well have to go actually, and want to go). This is were I want to go: http://www.boardingschoolreview.com... , but even after the Average Financial Aid Grant, it will still be $21,900 a year, how do I come up with that money? My grandparents are like rich (they won't give me any money tho, because they think like $20 no kidding is a lot of money even tho they have around 2 million or more) but we are just middle class (my dad makes about 40,00 a year or somethin' like that), will I get more fin. aid, if he had a lower income? Just please help me with this, I have to go but need money to go tho, SERIOUS answers ONLY please! Thanks! **WILL pick a BEST ANSWER!!**=]