“…The literature reveals a diversity of formal and informal sources through which adolescents receive information about sex. These include parents, peers, mass media, school, and health professionals (Bleakley, Hennessy, Fishbein, & Jordon, 2009;Coffelt, 2017;Donaldson, Lindberg, Ellen, & Marcell, 2013;Powell, 2008;Sprecher, Harris, & Meyers, 2008;Stidham-Hall, Moreau, & Trussell, 2012;Tanton, Jones, Macdowall, Clifton, Mitchell, Datta, & Mercer, 2015;Whitfield, Jomeen, Hayter, & Gardiner, 2013).In the context of Great Britain, Tanton et al's (2015) analysis of nationally representative data reveals that over the past two decades, there have been changes in what young people report as their main source of information about sex. For both young women and men, there has been a marked increase in 'lessons from school' forming young peoples' main source of information.…”