Massachusetts Sheltered English Immersion (SEI) Endorsement Possesses industry-recognized credentials that are part of the... teachers to be certified in their subject area and one or both of the following: Moderate Disabilities, English as a Second...
(SEI) Endorsement Possesses industry-recognized credentials that are part of the curriculum and the ability to train... in their subject area and one or both of the following: Moderate Disabilities, English as a Second Language (at the appropriate grade...