ERHS Staff Access Voice Mail by first dialing the school's main number: (562) 801-7500 Arrange by department... Administration Classified Counselor English History and Social Studies Math Physical Education Resource ROP Science Special Education World Languages Visual and Performing Arts All Departments 0 items found. Cynthia Lippstreu Department: Math Email: cLippstreu@erusd.org 0 Phone Ext: 57246 Location: X-6 Link: Twitter: Edmodo: More... Cheer Adviser B.A. Applied Math, 2001 UC Berkeley Classes:• Intro to Engineering • Principals of Engineering • Civil Engineering and Architecture • Engineering Design and Development