Directory Schools Casa Grande High School Casa Grande High School Casa Grande High School (9-12) 333 Casa Grande Road, Petaluma, CA 94954 (707) 778-4677 | Fax: (707) 778-4687 www.casagrandehighschool.org Dan OstermannPrincipal(707) 778-4679 Christina LeeAssistant Principal(707) 778-4681 Stephen OwensAssistant Principal(707) 778-4677 Wendy TegnellSecretary(707) 778-4677 District Petaluma Joint Union High School District
