By 1980, the National Institute of Education, the federal research agency, was providing limited funding to investigate the nature of sex bias in schools. In the past, single-sex schools were more predominant. The girls are intellectually curious, serious about their studies, and achieve more. Years ago, the ideal schools were set in the middle of hills where girls could rest during menstrual periods, students acquire domestic skills, and learn to please by studying good manners, religion and the arts. It is commented that schools without boys seem to be good for girls.
Children believe they share the same interests or behavioral compatibility.
Girls come into coed schools ahead of the boys, but leave behind them. Female students receive less active instruction in coed schools. Girls are penalized for doing what they should and lose ground as they go through school. Boys call out their opinions while girls wait to be recognized. Academic advantage goes to males in the coed classroom.