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 Libia S. Gil & Ana Díaz-Booz

Photograph of Libia S. Gil
Libia S. Gil
Senior Advisor, National High School Center

Libia S. Gil joined the American Institutes for Research to continue her work as the former Chief Academic Officer for New American Schools. In this capacity Dr. Gil provides senior counsel on leadership development initiatives and assists states and districts in developing strategies for improving student achievement by bridging research evidence with practice evidence. Dr. Gil is currently the lead consultant for the High School Renewal efforts on behalf of the Bill & Melinda Gates Foundation in the San Diego Unified School District. Dr. Gil was Superintendent of the Chula Vista Elementary School District for over nine years. In addition to multiple awards and honors, Dr. Gil received the 2002 Harold W. McGraw, Jr. Prize in Education for her outstanding leadership as Chula Vista Superintendent. The McGraw Prize is awarded annually to individuals who demonstrate exceptional contribution to the improvement of education systems. Additionally, Dr. Gil has received the Leadership Vision Award by the California Association of Bilingual Education in 2003. Dr. Gil has a Ph.D. in Curriculum and Instruction with emphasis on bilingual and multicultural education from the University of Washington.

Photograph of Ana Díaz-Booz
Ana Díaz-Booz
Principal, School of International Business (2008 California Distinguished High School )

Ana Díaz-Booz is the principal of the School of International Business (SIB) at the Kearny High Educational Complex in San Diego, California. Together with her instructional leadership team, teachers, and students, Ms. Díaz-Booz has helped SIB earn distinction in the areas of Title I achievement and "Fast-Track" junior college dual enrollment while posting a bronze medal in U.S. News and World Report's annual list of America's top high schools. In her school's short five-year history, SIB students have out-performed area high school students on statewide assessments in all English language learner (ELL) sub-groups and elevated the school's academic performance index each year.

As a first generation, bilingual student from a Spanish-speaking household, Ms. Díaz-Booz possesses a unique understanding of the struggles of ELL students in the nation's public schools and the importance of rigor and high expectations. She earned a BS in mathematics and a teaching credential from the University of California, San Diego. And after serving as a math teacher in the San Diego Unified School District, Ms. Díaz-Booz earned her master's degree and administrative services credential from the University of San Diego.

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English Language Learners

Question 8: Do you feel that a “pure sheltered” or a “double described” class is best for the English Language Learner?

Responded by: Libia S. Gil (Senior Advisor, National High School Center)

This is an important question that many of our high schools struggle with on a regular basis especially when the master schedule is tight and teacher capacity for meeting the needs of English Language Learners may be limited without appropriate support or training opportunities. 

First, it is helpful to understand who the ELL students are and to raise some of the suggested questions such as: what is the length of time in school in the United States, what are the level of English language proficiency and also what is the level of home language literacy?  Additional questions may include what is the level of formal education experiences and how many languages does the student use? The number of students with common heritage languages may also be a consideration for the most appropriate grouping structure. 

Second, it is equally helpful to understand who the teaching staff members are and to raise the questions:  Are there appropriate certification for teaching ELLs? What is the level of training support for all staff and the level of commitment to address the needs of ELLs?  The number of qualified staff available in relation to the number of ELL student may determine best organizational strategies.

In consulting with colleagues and conducting a review of relevant research literature, it appears that there are common issues and suggested practices to consider in determining the most appropriate ELL grouping arrangements:

  • Ana Diaz-Booz, a nationally recognized high school leader and expert in addressing the needs of ELLs shares this view: 
  • “After 15 years working with ELL in different programs, I strongly believe that students benefit most from “double described”, where there are strong models of English besides the teacher.  I don’t believe that ELLs participate less, as long as the teacher is trained to have systems in place for participation and sets a culture of acceptance (and high expectations) for all students.  The only class where I use “pure sheltered” is computer applications and I have at least two peer support students (11th/12th grade mentors) to assist the teacher.”
  • Rebecca M. Callahan, a researcher at the University of Texas, Austin investigated the effects of track placement and English proficiency on secondary English learners’ academic achievement while taking students’ previous schooling and length of time enrolled in U.S. schools into account (Tracking and High School English Learners: Limiting Opportunity to Learn.  American Education Research Journal. (2005)).   Some of the key messages from her study include:
  • A wide range of studies dispute the claim that tracking enhances learning by designating students and their assigned curriculum according to ability.
  • Research has also found that track placement not only influences access to academic and linguistic content, but can influence teachers’ belief about and treatment of students.   ELL students placed in low-track classes find that teachers may have low academic expectations and lead to the perception that ELLs are limited not only in language, but also in terms of knowledge skills and cultural competencies.
  • A major finding of the article is that ELLs benefit from access and exposure to high quality content and instruction. Consequently, low content leads to low expectations and set the precedence for academic development.

Judith Rance-Roney, Assistant Professor of Education at the State University of New York writes that an integrated approach with cross-disciplinary school wide teams is the best way to monitor student progress and needs (Best Practices for Adolescent ELLs.  Educational Leadership (2009, April)).

  •  In addition, Rance-Roney suggests that a dual curriculum to focus on language development as well as language for social integration and academic achievement must also address the additional time for students to master academic literacy and content at the same time.  Further, the author proposes the Global Community Classrooms or the ELL cluster model as an alternative to a newcomer school or program, depending on the number of recent immigrants and community support.  This model is designed to integrate the benefits of a newcomer program while avoiding linguistic isolation and uses elements of the sheltered instruction approach.  In these classrooms, one quarter to one third of the students are ELLs and the rest are native English speakers and is taught by a content area teacher who is trained in ELL methods and second language acquisition.  One of the goals is to encourage teachers and classmates to view ELLs as resources rather than liabilities.
  • Finally, Szpara, M., & Ahmad, at the Long Island University, C.W. Post Campus published an article on content and pedagogy in mainstream secondary school classrooms with a focus to making social studies meaningful for ELL students.  Some of their suggested practices are applicable to multiple content areas:
  • Develop a socially supportive classroom environment
  • Explicit teaching of academic skills with  the Cognitive Academic Language Learning Approach (includes teaching academic skills and content knowledge)
  • Emphasis on providing key information in the simplest terms (not to be confused with simplifying the content material) possible by reducing cognitive load and increasing the accessibility of complex content knowledge.
In conclusion, all the selected resources emphasize the placement of ELLs with appropriate native language models and teaching strategies to address academic language development and access to rigorous content at the same time. To avoid low level tracking and language isolation, it is clear that the “double described” is the preferred approach if the right supports for teaching ELLs are in place.