Year-round schooling has an academic advantage over traditional schooling. Year-round schools will have classes for a set number of days or weeks and then have an intermission of a few weeks where they will not attend school, totaling 180 days. “An annual calendar offers the same 180 days as a traditional calendar” (Advantages and Disadvantages). Traditional schools will have 180 days of classes with special breaks in between and a three-month summer vacation where children won't return to school until the fall. They were first created when America was an agricultural society (Lynch) to ensure that children were home to help their parents harvest the crops (pros and cons). Now that society is beginning to move away from the agricultural era, the number of children who need to stay at home to help with the harvest has decreased. This began the formation of a different school system; schools open all year round. “Students in year-round schools perform as well or slightly better in academic achievement than students in traditional schools” (Huebner). “The first schools that went against traditional schooling were located in urban areas” (Lynch). Schools in urban areas did not have to worry about agriculture, so the idea of ​​year-round schools was considered. “Two districts in San Diego were the first to create a year-round school, one in 1971 and the other in 1974. Thirteen others in California followed in their footsteps. Soon, four-fifths of year-round schools were in Western states, more than half of them in California. In 2007, more than 2 million U.S. students attended year-round academic programs in approximately 3,000 schools in 46 states” (Lynch). As the population of major American cities begins to increase, schools also needed a way to prevent traffic congestion. “Schools in fast-growing areas are middle of paper...st HuffingtonPost.com, March 20, 2014. Web. April 2, 2014. Norton, John. "Five schools will move to annual calendar: East Side principals hope change will improve test scores." The Pueblo Chieftain May 20, 2010. Print. Patall, Erika A., Harris Cooper, Ashley Batts Allen. “Extending the school day or year: A systematic review of research (1985-2009).” Review of Educational Research 80. 3(2010):401-436. PrintScholastic Staff. “The Pros and Cons of Year-Round Schools.” Scholastic Scholastic.com, Web. April 2, 2014 http://www.scholastic.com/parents/resources/article/choosing-schools-programs/pros-and-cons-year-round-schoolsScullard, Gabrielle. “All day, every day: The pros and cons of year-round school.” The Prospect TheProspect.net, December 11, 2013. Web. April 7, 2014. http://www.theprospect.net/all-day-every-day-the-pros-and-cons-of-year-round-schools-12111