http://www.basicrights.org/images/CampusClimateReport.pdf
Here's a quote:
A hostile climate around sexual orientation and gender identity created barriers to high school graduation and educational performance for LGBT respondents.
Nearly 30% of LGBT students indicated that the hostile climate around sexual orientation and gender identity in their high school created barriers to graduating and going on to attend college.
LGBT respondents also indicated that the hostile climate at their college or university had a significant impact on their educational performance. Nearly one in five students cite frequent class absence and needing to take an extended break from school. One in ten cites not graduating in time (5 or more years).
