Some follow up links :
Jennifer's web site is here -- many reported wishing for more time with her; perhaps a school district could organize a whole-day training?
If nothing else, we should all pledge not to buy into the horror of super-sexy halloween costumes!
ABC did a story on the gendering of costumes / of kids in the choosing of costumes
"Feminist Frequency" examines the ways that legos' markets gender norms and sexism; Lyn Michel Brown's book "Packaging Girlhood" provides even more data on this and Hardy Girls, Healthy Women offers a lot of strategies for resistance including a Halloween tip sheet!
Maine's Trans Youth Equality Foundation offers resources for families and supporters of kids whose gender expression doesn't "match" their assigned sex. Equality Maine offers political support and resources for safe schools.
Boys to Men offers trainings for schools interested in addressing gender stereotypes and the ways that they can support violence, and also support for parents wanting to help boys build a masculinity not centered on "Battle" (the biggest word in the "boy toy" word cloud).