Here are some good links to evidence-based curricula.
From the National Campaign: http://www.thenationalcampaign.org/resources/programs.aspx
From Advocates for Youth: http://www.advocatesforyouth.org/storage/advfy/documents/sciencesuccess.pdf
From SEICUS: http://www.siecus.org/index.cfm?fuseaction=page.viewPage&pageID=1342&nodeID=1
From HHS/Office of Adolescent Health: http://www.hhs.gov/ash/oah/oah-initiatives/tpp/programs.html