“…Plummer (2004) defines heterosexism as a diverse set of social practices -from the linguistic to the physical, in the public sphere and the private sphere, covert and overt -in an array of social arenas … in which the homo-hetero binary distinction is at work whereby heterosexuality is privileged. (Plummer, 2004, p. 19) Much of the research into sexuality or sexuality diversity has attempted to capture the current or retrospective experiences of sexual minorities in the education system and relate this to future action (for example, Robinson, 2010;Walker, 2001). However, Clarke, Kitzinger, and Potter (2004) have aimed criticism at previous research which has studied the voices of the "oppressed", arguing that it leads to further 72 C. Marks categorisation and marginalisation.…”