Math and English Language Arts (ELA) are two major areas that continue to show gender achievement gaps in U.S. students. Given the importance of peer relations in academic success, the degree of gender integration in classrooms in early elementary school may shift student interest and performance to lessen these gender gaps. We tested the…

Although Montessori is the most common unconventional education model, no multi-state study has compared standardized test proficiency of Montessori schools with districts. Here we report on this for the 10 states/regions with the most public Montessori schools (n = 195). In 3rd grade, Montessori schools were less proficient in math but more…