a well trained bilingual school psychologist will be able to administer and interpret assessment all psychological testing tool. also, an emphasis is placed on informal assessment measures such as language samples, observations, interviews, and rating scales as well as curriculum-based measurement to complement information gathered from formal assessments. a compilation of these tests is used to assess whether an ell student has a learning disability or merely is academically delayed because of language barriers or environmental factors. it is very unfortunate that many schools do not have school psychologist with the proper training nor access to appropriate tools. also, many school districts frown upon taking the appropriate steps to diagnosing ell students.