Winter 2020 Dr. Ortiz Workshop

Evidence-based Evaluation of English Learners: A contemporary approach to testing for all practitioners

with Dr. Sam Ortiz

Wednesday, January 8, 2020

9:00am - 4:oopm

San Mateo County office of Education

101 Twin Dolphin Dr. Redwood City, CA 94065

BAASP members $30, Non-members $50, $20 for CEUs


This presentation outlines an evidence-based approach to evaluating English learners with emphasis on contemporary methods for using tests in a nondiscriminatory manner. Specific procedures are presented which permit any evaluator to conduct assessments of English learners in a manner that can generate valid data to support conclusions and diagnostic decisions. Advances in tests and testing will be presented, including the dual-norming feature of the Ortiz PVAT and its utility in resolving the question of “difference vs. disorder.” Topics include: understanding bias in testing; issues regarding test score validity; advantages and disadvantages of typical methods for evaluating English learners; the importance of “true peer” comparisons, research foundations and use of the Culture-Language Test Classifications and Interpretive Matrix, and application of the new Ortiz PVAT for evaluation of both native English speakers and English learners via a dual-norming feature that controls for relative exposure in learning English. The knowledge and skills gained will be useful to practitioners at all levels and provides a solid base for engaging in evaluation of English learners that incorporates contemporary research and advances in tests and testing.

Learning Objectives: In general, following the workshop, participants will able t:o:

    1. Understand the true nature of bias in testing as a function of construct validity.
    2. Identify the limitations of various approaches to testing English learners and the extent to which validity is undermined by cultural and linguistic factors.
    3. Apply research findings in a manner that permits a “true peer” comparison for English learners
    4. Learn how to apply and use the Culture-Language Test Classifications and Interpretive Matrix as a method for evaluating the extent to which cultural and linguistic factors may have compromised the validity of test performance and results.
    5. Explain the dual-norming structure of the Ortiz PVAT and its relevance to testing.
    6. Draw valid conclusions regarding Gc/language ability as guided by results from the Ortiz PVAT
    7. Engage in competent and valid evaluation of any individual regardless of language background