California Subject Exams for Teachers (CSET)/content preparation information:

Next Generation Science Standards (NGSS): http://www.nextgenscience.org/

California Science Standards: https://www.cde.ca.gov/pd/ca/sc/ngssintrod.asp

CSET Science General Information: http://www.ctcexams.nesinc.com/TestView.aspx?f=HTML_FRAG/CA_CSET217_TestPage.html

CSET Science Preparation Materials: http://www.ctcexams.nesinc.com/TestView.aspx?f=HTML_FRAG/CA_CSET217_PrepMaterials.html

CSET Registration: http://www.ctcexams.nesinc.com/PageView.aspx?f=GEN_Register.html