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. Rita Knarreborg Department: Science Email: rknarreborg@erusd.org 0 Phone Ext: 57142 Location: N-2 Link: Twitter: Edmodo: More... Classes:• Chemistry in the Earth System • Physics in the Universe • AVID - 9th and 10th