California's Best Practice for Young Dual Language Learners: Research Overview Papers
Fact Sheet - Information for Limited English Proficient (LEP) Parents and Guardians and for Schools and School Districts that Communicate with Them: https://www2.ed.gov/about/offices/list/ocr/docs/dcl-factsheet-lep-parents-201501.pdf
Preschool English Learners: http://www.cde.ca.gov/sp/cd/re/documents/psenglearnersed2.pdf
Sample letter requesting materials in another language: http://www.spanadvocacy.org/sites/default/files/files/Letter_to_Schools_re_Language_Access_English&Spanish_0.pdf
Tools that empower Spanish-speaking parents: http://www.parentcenterhub.org/repository/tools-for-spanish-speaking-parents/