The MTA believes that all students deserve teachers who have the training and skills needed to teach them effectively. Our members experience first hand the challenges of teaching English language learners (ELLs) and understand the need for high-quality training in Sheltered English Immersion (SEI) instruction. ELLs and their teachers will benefit if the changes prompted by the U.S. Department of Justice. These regulations have been developed by the Department of Elementary and Secondary Education with input from practitioners and implemented in a rational and orderly way.

The Rethinking Equity and Teaching for English Language Learners (RETELL) initiative and the SEI Endorsement courses began in selected districts in the spring of 2013. Teachers and administrators in additional districts will begin trainings this school year. There have been considerable questions about this initiative. To address questions and concerns, the MTA has created a series of advisories to explain the requirements for teachers and districts.

Information will be updated as it becomes available. If you have additional questions, please contact Beth Shevlin at or the RETELL team at the state Department of Elementary and Secondary Education at

Quick Links

MTA RETELL Advisory #11: SEI Endorsement (December, 2014).

MTA RETELL Advisory #10: Course Readings (May, 2014).

MTA RETELL Advisory #9: Licensure and the SEI Endorsement (April, 2014).

MTA RETELL Advisory #8: Licensure and the SEI Endorsement (February, 2014).

MTA RETELL Advisory #7: SEI Endorsement Course (December, 2013) Date Changes for Course Registration - 2013-2014.

MTA RETELL Advisory #6: SEI Endorsement Course (November, 2013) Update on Course Registration for Year Two - 2013-2014.

MTA RETELL in a Nutshell (September, 2013)

MTA RETELL Advisory #5: SEI Endorsement Course (September, 2013) Update on Course Registration for Year Two - 2013-2014.

MTA RETELL Advisory #4: SEI Course Enrollment Process (June, 2013) The process for enrolling in a DESE SEI Endorsement course has changed for the 2013-2014 school year. Please carefully review the information to determine if you are eligible to enroll in no-cost SEI Endorsement course and what your course options are for the 2013-2014 school year.

Sheltered English Immersion (SEI) Endorsement Form Teachers may use this interactive form to determine if they must attain the Sheltered English Immersion (SEI) Endorsement for their license. The form provides guidance about the SEI Endorsement and walks you through a series of questions to help you understand what you are required to do and by when.

MTA RETELL Advisory #3: SEI Endorsement Course (March, 2013)

MTA RETELL Advisory #2: Bargaining and Implementation (February, 2013) MTA username and password required to view this document in the MTA Leaders area.

MTA RETELL Advisory #1: Regulations and Action Steps for Local Leaders (September, 2012)

Department of Education Documents

Department of Elementary and Secondary Education's RETELL section. The regulations are posted here, along with background information as well as frequently-asked questions.

DESE District Cohort Chart

Register for SEI Endorsement Courses

Map of SEI Course Locations

How to Apply for the SEI Endorsement

DESE SEI Course Hardship Form

NEW RETELL Implementation Guide for 2014-2015 (January 31, 2014) Updates on enrollment targets, SEI Endorsement options and course registration for Cohort 1, 2 and 3 districts.

Letter Concerning Requirements to Obtain the SEI Endorsement (August 1, 2013)

DESE Full SEI Course Syllabus - Version 1.0 (Spring, 2013) Changes are anticipated for future course sections.

DESE Memo to Teachers on RETELL (January, 2013)

DESE Memo from Ed Commissioner Mitchell Chester (August 27, 2012) RETELL update, overview and next steps.

MTA in Action

MTA Cover Memo on Proposed Regulations (April 20, 2012) and comments submitted by the MTA on proposed regulations, 603 CMR 7.00603 CMR 14.00, and 603 CMR 44.00 .

MTA Policy to Practice Brief: Language Acquisition Staff Development

Deeper Dive

DESE RETELL Update (April 2, 2013) Update includes information on instructor requirement, pilot of SEI Endorsement Course, etc.

Needs Assessment Report: Sheltered English Immersion (SEI) Category Trainings Report commissioned by DESE.

English Language Learners: Educator Preparation and Training/Professional Development Required for Sheltered English Immersion (May, 2012) Memo from DESE Commissioner Mitchell Chester on the RETELL Initiative.