American Association of Pesticide Safety Educators
http://www.aapse.org

Cornell University extension site for pesticides
http://psep.cce.cornell.edu/Tutorials/Tutorials-Slides.aspx

Pesticide environmental stewardship website
http://pesticidestewardship.org/Pages/default.aspx

University of California extension site – with links to training materials and on-site training videos
http://wric.ucdavis.edu/

Washington State University, Pesticide Education Program
http://pep.wsu.edu/

Washington State University, Pesticide Safety Programs
http://pep.wsu.edu/psp/scripts/index.html