The English Language Development Program is designed to help English Learners (ELLs) achieve language proficiency and academic achievement comparable to that of the average native speaker within the district as quickly and effectively as possible.  Students whose home language surveys indicate a language other than English are assessed using the California English Language Development Test (CELDT). The five proficiency levels determined by the CELDT are:  Beginning, Early Intermediate, Intermediate, Early Advanced, and Advanced.  Those students who demonstrate limited English proficiency are designated "English Learners." 
ELLs receive appropriate language instruction based on  their language proficiency level.  In addition, the state's ELD standards provide a "road map" for differentiating instruction in the classroom.