Accelerate Language Development for Multilingual Learners with SIOP®

Developed by founding authors, Dr. Jana Echevarría, Dr. MaryEllen Vogt and Dr. Deborah Short, the SIOP®  (Sheltered Instruction Observation Protocol) Model instructional framework is proven to be effective for making grade-level content accessible and engaging for English learners (ELs) while simultaneously advancing their academic language development.

The SIOP® Model is a time-tested, empirically-validated lesson planning framework that enhances the implementation of any curriculum or initiative. With eight (8) essential components for impactful lesson planning, the SIOP® Model advances academic language development alongside meaningful engagement with lesson content through any mode of lesson delivery, making it beneficial for ALL students.

Savvas Learning Company is proud to be the sole organization partnering with SIOP® authors to offer educators SIOP® Professional Learning that reflects fidelity to the SIOP® Model, along with attention to best practices to engage adult learners.


What is the SIOP® Model?

Support teachers in helping ELs, and all other students, engage with the language and content of lessons.

Curriculum-Neutral Instructional Framework

When implemented with fidelity, the SIOP® Model is proven to bring about statistically significant content and academic language growth in any curriculum.

Language Development for All Benefit

The SIOP® Model is beneficial for all students, including native English speakers. Though the model is advantageous for everyone, its Components are vital for English Learners.

Seamless Integration Benefit

The SIOP® Model fits with any initiative, curriculum, or program. It’s not “one more thing,” but rather serves to amplify positive outcomes.

Meaningful Engagement

The SIOP® Model advances academic language development alongside meaningful engagement with lesson content through any mode of lesson delivery.


The SIOP® Model Authors

Savvas is the only organization endorsed by SIOP® authors, working in direct collaboration with them to offer educators the best professional learning experiences and ensure our offerings reflect fidelity to the SIOP® Model.

  • Jana Echevarría, Ph.D.
  • MaryEllen Vogt, Ed.D.
  • Deborah J. Short, Ph.D.
  • Katie Toppel, Ed.D.

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.

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.

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.

Katie Toppel, Ed.D.

Founding SIOP® Co-Author


Katie Toppel, Ed.D. is the newest member of the SIOP author team and co-author of Making Content Comprehensible for Multilingual Learners: The SIOP® Model, 6th edition. She is currently an elementary Multilingual Learner Specialist in Oregon serving students through co-planning, co-teaching, and small group instruction. Dr. Toppel’s instructional background includes experience as a classroom teacher in kindergarten and first grade and a K-12 Support Services Teacher at the Franconian International School in Germany. She has taught courses in the ESOL endorsement series at Portland State University and continues to support teachers in their professional learning journeys.

Dr. Toppel also co-authored DIY PD: A Guide to Self-Directed Learning for Educators of Multilingual Learners, and co-founded #MLLChat_BkClub on Twitter(X), which provides educators with opportunities to engage in virtual book studies focused on improving practices for multilingual learners. She has additionally authored several articles and book chapters about teaching multilingual learners.

Take a deeper look into the SIOP® Model

What is the SIOP® Model?

Hear from the authors and see classroom demonstrations of the SIOP® Model and discover how it can enhance English language instruction.


See how the SIOP® Model provided a proven, time-tested framework for moving one teacher’s class towards academic excellence.

How SIOP® Fits with Any Initiative

Discover how any curriculum can help ELs develop their language skills in a conversation among the SIOP® Model’s authors.

Impact on Student Learning with the SIOP® Model

One teacher describes the continuous and steady improvement her school experienced over three years of SIOP® implementation.


Discover the resources available to support SIOPers


The SIOP® Model

The SIOP® Model instructional framework advances academic language development alongside meaningful engagement with grade-level lesson content.

Download the SIOP® Wheel Graphic ›


SQP2RS Posters

These posters guide students through the steps for the SQP2RS strategy for reading an informational or expository text.

View the video of SIOP® Author Dr. Vogt explaining the SQP2RS strategy here.

Download SQP2RS Poster ›


SIOP® Model Savvas Blog Posts

Read articles by SIOP® Model authors, educators, and others addressing general techniques and special cases where the SIOP® Model can benefit instruction.

Read Blog ›


SIOP® Model Professional Learning YouTube Playlist

Gain insights from the authors of the SIOP® Model and hear from educators who improved classroom performance through the Model’s implementation.

Explore YouTube Videos ›


SIOP® Model Podcast Series

Learn ways to better support English learners / multilingual learners in K-12 classrooms. Join Dr. Katie Toppel as she chats with SIOP® authors Dr. Jana Echevarría, Dr. MaryEllen Vogt, and Dr. Deborah Short to uncover a variety of essential teaching techniques.

Listen to Podcast ›


School Stories

Creating a Culture of Learning for All Students with the SIOP® Model - Jefferson County, Alabama

Get Inspired


SIOP® Model Testimonials

SIOP® is Differentiated Instruction Plus Academic Language Development


"Learning collectively and collaboratively around these strategies in grade level PLCs transformed our practice."

—Dr. Karen Woodson

Founder & CEO, Leading for School Improvement Former Principal; Former District EL Director; Applied Linguist


"I fight for my ELL students to be in content classes because it is fertile ground for their language to grow. Inclusion is where I plant my flag, and SIOP® has made that possible."

—Tan Huynh

SIOP® Teacher, Vientiane, Laos


"It really helps you refine your teaching practice, and helps you look at the purpose of what it is that you’re teaching and why you’re doing it that way."

—Jess Bell

SIOP® Teacher ELA/ESL Teacher Warren High School Indianapolis, IN


"I can see the light bulbs going on in their brains, their writing and academic language improving, and each of them experiencing greater success! I want every teacher to know about SIOP®. It truly changes lives!"

—Andrea Rients

Education Specialist Savvas Learning Company


"In our classroom, we use SIOP® because we have a variety of language learners and a variety of levels. We know that they all learn in different ways."

—Bailey Rager

SIOP® Teacher Grade 2 Teacher Enlace Academy Indianapolis, IN