No Child Left Behind demands that after one year of enrollment, ELLs must take statewide assessments, and the results must be integrated into the school's accountability measures. Enrolling large numbers of adolescent ELLs can put the school at risk of failing to make adequate yearly progress.

In these times of increasingly meager resources in which schools are paring down to essential programs and making contingency plans to deal with statewide budget cuts and federal program funding reductions, adolescent ELLs are often viewed as an unwelcome presence in schools, a drain on the limited resources available. Increasing the challenge is the reality that many immigrant adolescents enter secondary schools with a triple whammy—little or no English, interrupted or limited formal schooling, and limited literacy in any language.

There is no more diverse learning cohort than that grouped under the term adolescent English language learner. Although many of these students are newcomers (immigrants who arrived within the past five years), others have always called the United States home.

now, for example, that 57 percent of adolescent learners classified as limited English proficient were born within U.S. borders and thus are second- or third-generation residents (Batalova, Fix, & Murray, 2007). These students have often achieved oral proficiency but lag behind in their ability to use English for literacy and content learning for reasons that may be only partly related to second-language status—for example, mobility and switching between language programs (Short & Fitzsimmons, 2007).

Some immigrant students arrive in the United States with fully developed academic literacy in their native language and a strong record of academic achievement in their home countries. Filip, for example, entered U.S. schools in 9th grade after having attended a high-level academic school in the Czech Republic. Within two years, he had gained a command of academic English and was performing above grade level. Contrast Filip with Ben, who emigrated from the Sudan at age 16 after experiencing the trauma of civil unrest and a severe interruption in formal schooling, which resulted in a limited foundation in literacy in any language. Rosaria, unlike either Filip or Ben, is a U.S.-born English language learner. Although her home language is Spanish, at 17, her social language outside the home is English. However, her writing exhibits many of the linguistic differences of an immigrant English learner, and she reads at the 5th grade level.

Such reforms must also take into account the particular context of each school—its demographic profile, existing program models, community culture, and so on. With this caveat in mind, a number of principles and practices support improved achievement for adolescent ELLs as well as for their native-English-speaking peers.

there is surprising agreement in what constitutes best practice for adolescent English language learners. It is up to school leaders to implement the school reforms that work and to think outside the traditional boxes that have restricted the achievement of these students.

School administrators and teachers grappling with the often confusing and contradictory premises of these popular initiatives can draw on three useful sources of information: (1) meta-analyses of research studies regarding program effectiveness and instructional practices that support and enhance achievement, (2) studies of the initiatives' effect on English language learners' English language acquisition and academic achievement, and (3) databases that compile language assessments administered to large populations of English language learners over time and across grade levels. Several myths about the instruction of English language learners do not stand up to scrutiny when examined through the lens of this research base.

The "One-Size-Fits-All" Myth

Schools throughout the United States use a variety and range of theoretically sound programs to meet the needs of their specific populations of English language learners, who vary in demographic and linguistic characteristics.

For instance, bilingual programs are appropriate and effective in schools that serve concentrations of students who use a common native language

In many schools, however, English language learners speak a number of different native languages; such schools often use English as the common language of content-area instruction. Therefore, some state agencies and language-minority educators advocate a mix of services and program types in response to each school district's demographic mix—an approach that contradicts the state laws requiring a default model of sheltered English immersion

The "Language of Instruction" Myth

But according to Education Week, cumulative and comparative studies based on National Assessment for Educational Progress (NAEP) scores suggest that statewide mandates limiting bilingual education in California, Arizona, and Massachusetts have produced "less-than-stellar" results (Zehr, 2008, p. 10).

Proponents of the ballot initiatives mandating sheltered English immersion argue that bilingual education is the reason for low levels of English proficiency among immigrant students—especially Latinos, the group served by the vast majority of the bilingual programs.

(Parrish, Pérez, Merickel, & Linquanti, 2006). The study found that students participating in English-only education programs had no statistically significant advantage in terms of academic achievement over those in bilingual education programs that parents chose through the waiver process under the law.

Thus, ballot initiatives have not realized their goal of improving English language learners' academic achievement.

In denying the injunction against the implementation of Proposition 227, the U.S. District Court in Valeria G. v. Wilson (1998) ruled that structured English immersion was based on delivery of English language and content instruction that was "sequential" rather than "simultaneous."

This focus is based on the belief that the "problem" facing these students is essentially a "language problem.

K-12 Program Continuity and Coherence Programs for English language learners must be proven models with a demonstrated track record. Programs must have long-term goals and continuity in the curriculum as students move up through the grade levels. As students' listening, speaking, reading, and writing skills in English grow, the focus of instruction should shift, and instruction should be differentiated according to students' language levels (Mora, 2006). Differentiating the curriculum in this way requires monitoring students' progress toward performance benchmarks in English language proficiency, literacy, and content-area learning (Gottlieb & Nguyen, 2007)

Targeted Professional Development Educators must view the education of language-minority students as a shared responsibility. Teachers must have ample professional preparation in how to use appropriate curricular materials and teaching strategies to promote English language learners' achievement. Both new and experienced teachers need intensive professional development above and beyond the teacher education coursework required by the state credential and certificate programs. For example, teachers should be knowledgeable about second-language acquisition and cross-linguistic transfer so that students learning in their second language can capitalize on the commonalities in literacy with their native language, regardless of whether their instruction is in dual languages.

Local school districts must have the freedom and support to establish sheltered English immersion programs and/or bilingual education programs depending on community values, parental choice, and available resources. Policies must allow flexibility in use of students' native languages—especially for development of literacy skills. In states with anti-bilingual mandates, local jurisdictions should apply liberal and open interpretation of petition and waiver requirements to support parent empowerment and involvement in program selection.

Research-Based Policies to Replace Politically Based Policies