Compulsory 5-days a week, nearly 8-hours a day attendance at public school only began nationwide in the [[United States]] during the 20th century. Compulsory schooling laws were not universal throughout the [[United States]] until 1917, and even then the school year was often less than a half year.<ref>http://www.renewamerica.us/columns/kellmeyer/050428</ref> There have been few, if any, long-term studies on the effects of the modern approach of full-time attendance at school from age 6 and younger to age 21 and older. | Compulsory 5-days a week, nearly 8-hours a day attendance at public school only began nationwide in the [[United States]] during the 20th century. Compulsory schooling laws were not universal throughout the [[United States]] until 1917, and even then the school year was often less than a half year.<ref>http://www.renewamerica.us/columns/kellmeyer/050428</ref> There have been few, if any, long-term studies on the effects of the modern approach of full-time attendance at school from age 6 and younger to age 21 and older. |