Children with disabilities http://toroporno.in.net/ toroporno.com But the discovery of the emails has raised questions about the grade system's credibility. Indiana uses A-F grades to determine which schools get taken over by the state and whether students seeking state-funded vouchers to attend private school need to first spend a year in public school. They also help determine how much state funding schools receive. A low grade also can detract from a neighborhood and drive homebuyers elsewhere.