Hey guys, 
So I found a few studies that looked at more social outcomes of both homophobia, and also the lack of gay and lesbian issues in early childhood education.  Here is the first article discussing the "invisibility" of gay and lesbian issues in early childhood education:
ABSTRACT This article, based on empirical qualitative data gained from a
survey and interviews with a group of early childhood educators, argues for the
inclusion of sexual differences, or more specifically, gay and lesbian equity
issues, in approaches to anti-bias. The article examines the discourses that
prevail in the field, that perpetuate the perceived irrelevance, invisibility and
exclusion of lesbian and gay issues in early childhood settings and education
generally. The discussion focuses on several main areas, including: the
prevalence of the dominant discourses of childhood and sexuality that intersect
to constitute sexuality as irrelevant to children; the pervasiveness of the
discourse of compulsory heterosexuality and the assumed absence of gay and
lesbian families in settings; or the assumed absence of significant gay and lesbian
adults in children’s lives; the presence of homophobia and heterosexism in early
childhood settings; and the perceived irrelevance of broader social, political and
economic issues to the ‘child’s world’. This article highlights some crucial issues
for practice and policy development in the area of anti-bias education concerned
with sexual differences.
And here's the article on the victimization of sexual minorities:
The present study examined the link between sexual orientation and adjustment in a community sample of 97 sexual minority (gay male, lesbian, bisexual, and questioning) high school students, taking into account their experiences of peer victimization and social support within peer and family contexts. Adolescents were identified in a large-scale survey study conducted at 5 high schools.  They were matched to a comparison sample of their heterosexual peers. Sexual minority adolescents reported more externalizing behaviors and depression symptoms than heterosexual youth. Compared to their heterosexual peers, sexual minority youth reported more sexual harassment, more bullying, less closeness with their mothers, and less companionship with their best friends. There were no significant differences between gay male, lesbian, bisexual, and questioning adolescents. Overall, both victimization and social support mediated the link between sexual orientation and psychosocial
symptoms. Among sexual minority youth, the link between social support and externalizing was
mediated by experiences of peer victimization. These findings highlight the contextual risk and
protective factors associated with non-heterosexual sexual orientation in accounting for the emotional and behavioral problems in this population.
They both contain extremely relevant issues to our project, and we can even use them during the filming process.  
I was also just thinking, if there's room in the video, it might be good to add 2 contrasting examples of social encounters between children?  So like one scene with a mistreatment of a gay individual compared to another scene, with open minded and educated children treating the same child with respect and decency.   Might be good idea, but let know what you guys think.