California State English-language Arts Content Standards for Sixth Grade. http://www.cde.ca.gov/be/st/ss/enggrade6.asp
California State Mathematics Content Standards for Sixth Grade. http://www.cde.ca.gov/be/st/ss/mthgrade6.asp
California State Social Studies Content Standards for Sixth Grade. http://www.cde.ca.gov/be/st/ss/hstgrade6.asp
California State Science Content Standards for Sixth Grade. http://www.cde.ca.gov/be/st/ss/scgrade6.asp