This document discusses different models for bilingual education and English as a second language programs. It summarizes the goals and key features of different program models including transitional bilingual programs, dual bilingual programs (one-way and two-way), ESL pull-out, ESL self-contained, sheltered English/content-based ESL, and legal requirements for bilingual education in Texas. The models vary based on factors like the student population, use of native language, inclusion of English speakers, and duration of the program.