The National Women’s Law Center filed complaints against 12 school districts Wednesday alleging they failed to offer equal opportunities for female athletes, reports the Associated Press. NWLC officials say they believe statistics from 2006 indicate the districts violated Title IX, the federal law prohibiting gender discrimination in federally funded education programs. The U.S. Department of Education’s Office for Civil Rights will investigate the complaints. The school districts are Chicago; Clark County, Nev.; Columbus, Ohio; Deer Valley, Ariz.; Henry County, Ga.; Houston; Irvine, Calif.; New York City; Oldham County, Ky.; Sioux Falls, S.D.; Wake County, N.C.; and Worcester, Mass. Determining whether Title IX violations exist is more complicated than looking at raw numbers because the statute can be satisfied in one of three ways: if the percentage of athletes who are girls is about the same as the student body; if the school has continually expanded opportunities for girls; or if the school meets its female students’ interest in participating in sports…