The SIOP® Model Authors

SIOP® Professional Learning Offerings      Learn More Now

SIOP® Accelerates Academic
Language Development

SIOP® Makes Grade Level Content Comprehensible for Students


Our three founding SIOP® authors have decades of teaching, professional development, and research experience. They are the world’s premier experts on Sheltered Instruction for English Learners.

Savvas Learning Company is proud to be the sole organization collaborating with the SIOP® authors to create SIOP® professional learning for educators and administrators. Our exclusive collaboration ensures that our SIOP® workshops are true to the SIOP® Model, and reflects the most up-to-date research surrounding language acquisition, current demographics, trends in education, and best practices for teaching English Language Learners.

Jana Echevarría, Ph.D.
Founding SIOP® Co-Author

Jana Echevarría, Ph.D., is Professor Emerita at California State University, Long Beach where she received her university's Outstanding Professor award for excellence in scholarship, teaching and service. A founding researcher of the SIOP Model, Dr. Echevarría has published widely on effective instruction for English learners, including those with learning disabilities. She has presented her research throughout the U.S. and internationally, including at Oxford University (England), Wits University (South Africa), Harvard University (U.S.), Stanford University (U.S.), University of Barcelona (Spain), and South East Europe University (Macedonia) where she was a Fulbright Specialist. She also was a resident instructor at Feng Chia University (Taiwan). Dr. Echevarría was a finalist for the Senior Research Award given by the American Education Research Association and was inducted into the California Reading Hall of Fame. She serves as an expert on English learners for the U.S. Department of Justice.


Connect with Dr. Echevarría via her blog on English Learners at

Follow Dr. Echevarría on Twitter


 “People often say, ‘Well, SIOP® is just good teaching, so I can use it for all my students.’ And that is true. We have many schools that use the SIOP® Model for all students. But there are features that are absolutely critical for English learners. It’s the only empirically validated model of instruction for English learners.” 
Dr. Jana Echevarría


Deborah J. Short, Ph.D.
Founding SIOP® Co-Author

Deborah J. Short, Ph.D., directs Academic Language Research & Training, LLC and provides professional development on academic literacy, content-based ESL, and sheltered instruction worldwide. Formerly she was a division director at the Center for Applied Linguistics where she co-developed the research-validated SIOP Model. She has directed English learner research and program evaluations for the Carnegie Corporation of New York, Rockefeller Foundation, U.S. Department of Education, U.S. Department of Justice, and Southern Poverty Law Center, among others. Publications include the SIOP Model books, ESL textbooks for National Geographic Learning/Cengage, and numerous professional journal articles. She has presented at conferences around the U.S. and in Canada, Europe, South America, the Middle East, and New Zealand. She has taught ESL and EFL, in New York, California, Virginia, and the DR Congo. She was President of TESOL International Association for 2020-2021 and is now Past President.


Dr. Short’s publications include SIOP® Model books, ESL textbooks for National Geographic Learning/Cengage, and numerous professional journal articles.


“A number of schools are using SIOP® as a school improvement model. They provide SIOP® Professional Development to all of their teachers. They recognize that even though SIOP® initially began with English language learners, it is also effective with all students, particularly those struggling with academic language and literacy.” 
~ Dr. Deborah J. Short


MaryEllen Vogt, Ed.D.
Founding SIOP® Co-Author

MaryEllen Vogt, Ed.D., is Professor Emerita, California State University, Long Beach, and currently, she is the Director/ reading specialist for Literacy Intervention & Enrichment for a local nonprofit. She is the author/co-author of numerous articles, chapters, and books, including literacy texts and those in the SIOP series. Dr. Vogt has provided professional development throughout the U. S. and in several countries, and she served as a Visiting Scholar at the University of Cologne, Germany. She is a member of California’s Reading Hall of Fame, is a recipient of CSULB’s Distinguished Faculty Teaching Award, and was President of the California Reading Association and the International Literacy Association. In 2017, Dr. Vogt was inducted into the International Reading Hall of Fame, an organization of literacy researchers and scholars.


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“Once teachers learn how to implement the SIOP® Model well in their classrooms, we find that they are so enthusiastic about teaching because they have fewer students who are having difficulty. We have also found that the incidences of disciplinary problems and classroom management issues are greatly relieved because the students are so highly engaged throughout their lessons!”
~ Dr. MaryEllen Vogt