John Seidlitz is an independent educational consultant and the author of Sheltered Instruction Plus: A Guide for Texas Teachers of English Learners; Navigating the ELPS: Using the New Standards to Improve Instruction for English Learners; and a contributing author for The SIOP® Model for Teaching History-Social Studies for English Learners.

He is the co-author of numerous publications including the 7 Steps to Developing a Language-Rich Interactive Classroom®. Mr. Seidlitz has been a member of the SIOP® National faculty and guest lecturer for many regional and national language development conferences.

He taught social studies and ESL, served as a secondary ESL program coordinator, and held the position of education specialist at ESC Region 20 in San Antonio, Texas. In 2005, Mr. Seidlitz founded Seidlitz Education which is dedicated to the mission of Giving Kids the Gift of Academic Language™.