In 2002, only about a dozen schools were separating the sexes, according to the National Association for Single Sex Public Education, an advocacy group. Now, an estimated 500 public schools across the country offer some all-boy and all-girl classrooms.
Proponents argue the separation allows for a tailored instruction and cuts down on gender-driven distractions among boys and girls, such as flirting. But critics decry the movement as promoting harmful gender stereotypes and depriving kids of equal educational opportunities. The ACLU claims many schools offer the classes in a way that conflicts with the U.S. Constitution and Title IX, a federal law banning sex discrimination in education. Researchers also have weighed in.
Diane F. Halpern, a former president of the American Psychological Association, co-authored a review of studies last fall in the journal Science that found research doesn't support the benefits of single-sex education. Additionally, there are lots of problems whenever you segregate people into groups, Halpern said.
"Stereotyping increases so we really do have lots of data that says it's just not supported," she said.
However, proponents have put out their own studies, showing the benefits of separating students. Middleton Heights Elementary cited the research when it first piloted single-sex classes in a few grades. The goal was to address the struggles boys were having in reading.
The idea proved so popular that single-sex classes have expanded throughout the school. Parents can opt out, a choice required by law, if they want their kids in a traditional coed classroom.