Beginning in the 1970s, concerns over teen pregnancy– and later HIV/AIDS–galvanized widespread public support for sex education in schools. Most states today have a policy requiring HIV education, usually in conjunction with broader sex education. Meanwhile, as debate over the relative merits of abstinence-only-until-marriage versus more comprehensive approaches has intensified, states have enacted a number of specific content requirements. This brief summarizes state-level sex and HIV education policies, as well as specific content requirements, based on a review of state laws, regulations and other legally binding policies.
In Nigeria, public opinion regarding sexes in schools is influenced most by religious and cultural beliefs rather than the idea that students learn better separated into sexes. Because of this, the attitude towards the separation/integration of sexes varies depending on the ethnic makeup of the region. People in northern Nigeria are mostly Muslim and as a result, are more inclined to choose single-sex education over co-education in-line with their religious beliefs. However country-wide, co-education schools are more common than single-sex schools.
By 1900 the Briton Frederic Harrison said after visiting the United States that "The whole educational machinery of America ... open to women must be at least twentyfold greater than with us, and it is rapidly advancing to meet that of men both in numbers and quality".  Where most of the history of coeducation in this period is a list of those moving toward the accommodation of both genders at one campus, the state of Florida was an exception. In 1905, the Buckman Act was one of consolidation in governance and funding but separation in race and gender, with the campus that became what is now Florida State University designated to serve white females during this era, the campus that became what is now the University of Florida serving white males, and coeducation stipulated only for the campus serving black students at the site of what is now Florida A & M. Florida did not return to coeducation at UF and FSU until after World War II, prompted by the drastically increased demands placed on the higher education system by veterans studying via GI Bill programs following World War II. The Buckman arrangements officially ended with new legislation guidelines passed in 1947.