Schools in England are very old; the schools were founded after the Roman occupation of Britain, after the demise of the Roman schools. The new school was founded in 597 by Saint Augustine. The Viking invasions were a negative factor against schools in England. Schools have started to grow again despite continuous invasions (Gillard, 2011). Schools were expanded and developed in the period between 1100 and 1500, to which the English Renaissance contributed positively. The Elizabethan I period (1558-1603) saw a revolution in the education and school system. In the 1800s and thereafter, educational theories developed and schools took modern forms. The schools were predominantly monosexual (boys' schools) until the 19th century; female students begin to enter these schools. The modern school education system can be classified into two main categories: coeducational schools and single-sex schools, the latter could be described as single-gender education; is the implementation of education separately for pupils of the same sex, male or female, in many societies this separation due to religion or tradition causes. Single-sex schools were dominant until the 19th century, when coeducation began and expanded. Coeducation (mixed sex education) could be described as mixed gender education; it is education in which male and female students study together in the same classrooms, buildings or schools; at the end of the 20th century coeducation became the dominant school system. The mixed system is the dominant system in most schools in the UK (Department for Education and Skills, 2007). The essay attempts to evaluate the problems of coeducational schools, compared to single-sex schools. The main argument in favor of the implementation of single-sex schools is considered first and foremost...... middle of paper ......ide Web. Accessed May 8, 2014 from http://dx. doi.org/10.1080/03057640902903722Single sex education (2013) Available from the World Wide Web. Accessed 26 May 2014 from www.ukboardingschools.com/advice/single-sex-education/Skelton, C. (2010) 'Gender and outcomes: girls are the “success stories” of restructured education systems", Routledge, Educational review [online], vol. 62 n. 2 Available from the World Wide Web. Retrieved 8 May 2014 from http://dx.doi.org/10.1080/00131910903469536Tobias, L. (2013) 'Single Sex or Mixed Schools?'. Available from the World Wide Web. Accessed 26 May 2014 from http://www.gettherightschool.co.uk/single-sex-mixed-schools.htmlYounger, M. et al (2005) Raising Boys Achievement, Faculty of Education from the University of Cambridge. Available from the World Wide Web. Accessed 10 May 2014 from https://www.education.gov.uk/publications/.../RR636.pdf