This report discusses the results of a national survey of Canadian high school students undertaken in order to investigate what life at school is like for students with sexual or gender minority status. Our study sought to identify the forms and extent of students' experiences of homophobic and transphobic incidents at school, the impact of those experiences, and the efficacy of measures being taken by schools to combat these common forms of bullying. The study involved surveying over 3700 students from across Canada between December 2007 and June 2009 through two methods. The first method was designed to reach as many sexual and gender minority youth as possible: students who self-identify as lesbian, gay, bisexual, trans, Two Spirit, queer, or questioning (LGBTQ). To this end, we implemented an open-access online survey and advertised it widely through news releases and website and Facebook notices and by systematically contacting every organization across the country that we identified as having LGBTQ youth membership. The second method was implemented in controlled conditions using a login system through in-school sessions conducted in twenty randomly selected school districts in all regions of the country (with the exception of Québec where a parallel survey was conducted by Québec researchers). Fifteen school districts participated in sufficient numbers to permit statistically significant analysis. In-school findings were used to validate openaccess findings. This report analyzes the aggregate data from both individual online participation and in-school sessions. In addition, we have submitted confidential reports to all participating boards that held in-class sessions comparing their own results to the results from all in-school sessions.