With the passage of the No Child Left Behind Act of 2001, the idea of ​​single-sex classrooms gained momentum. No Child Left Behind also included an amendment directing the U.S. Department of Education to establish standards for experimenting with single-sex classrooms and schools. Since this measure came into effect, many states have launched such experiments with single-sex classes, which got me thinking. Would single-sex classes improve the quality of education in American public schools? While researching, I discovered that the word "classrooms" is broad enough to include single-sex schools as well as co-ed schools where only certain classes are taught separately so further research can be evaluated. I have found that single-sex classes benefit students both academically and later in life, helping them develop positive attitudes about education and themselves , and that they are very desirable for students, parents and teachers. Through my research, I have discovered that single-sex classes benefit students academically, which translates to success in life, marriage, and professional careers. Huffman said the Riordan study, done by Cornelius Riordan, used 58,270 randomly selected students to analyze the differences between co-ed and single-sex schools. In analyzing the data, the author implemented “controls for parental structures, race, gender, family size, and socioeconomic backgrounds.” The longitudinal study of academic performance found that boys and girls who attended single-sex schools performed better than co-ed schools by almost a full school year and that both continued into adulthood with a higher great professional success. Additionally, the study found that g...... middle of paper ......s." ASCD (Association for Supervision and Curriculum Development). nd Web. April 22, 2014. Huffman, Ronald J. Jr. “Single-sex schools and classrooms as an effective school structure that will foster an effective learning environment, free from external distractions from youth subculture Durham Public Schools, October 15, 2012. Web,.” April 21, 2014. Linder-Altman, Dale. Gender Classes Work, Teachers and Parents Say. December 12, 2010. Web. April 20, 2014. Longley, Jennifer. “High school students say single-sex schools are an academic plus.” Christian Science Monitor July 7, 1997: 13. Academic Search Premier Web. April 23, 2014. “Single-sex education is spreading. » USA Today October 13, 2008.: Academic Search Premier. April 23, 2014. Whelan, Christine B. “Singles. » 50.17 (1998): 34-36. Premier Academic Research. 2014.