The book "Sex in Education; or, A Fair Opportunity for Girls" by author Edward H. Clark examines the issue of gender equality in education and the role of gender stereotypes in the school environment. The author analyzes the history of women's education, the problems faced by girls in educational institutions, and offers ways to solve them. The book was created to support the improvement of educational programs to give every girl a fair chance to receive a quality education without the harmful influence of gender bias.