If someone spends $1.00 on a lottery ticket, this is where the proceeds end up (says the Illinois Lottery). The biggest chunk of that, 61 cents, would go for prizes … There’d be about 6 cents that goes to selling commissions and selling bonuses for the retailers … 5 % is kind of the ‘other category’ … And that leaves us with about 28 cents for the good causes we support.”

http://wuis.org/post/illinois-lottery-shell-game-school-funding