This site says it's 91.7% Latino last year. 7.9% Black.
http://www.ed-data.k12.ca.us/profile.asp?Tab=1&level=07&reportnumber=16&county=19&district=64733&school=1934371#studentsbyethnicity
Great data. I have to laugh at 0.0% white. And (drum roll) Hispanics are 72.5% of the district...!