The goal of the What Works Clearinghouse (WWC) Practice Guide, "Teaching Academic Content and Literacy to English Learners in Elementary and Middle School," is to provide four recommendations for teaching complex content to English learners while simultaneously building academic language and writing and oral language proficiency. This updated practice guide builds on the work of the first practice guide on English learners, expands the grade range from K-5 to K-8, and incorporates instruction in mathematics, science, and social studies, as well as literacy. With techniques found in this guide, teachers can effectively address English learners' content and language needs by systematically--and at times explicitly--building students' English language and literacy, while teaching history, mathematics, science, and other disciplines. This brief summary report focuses on the first of the four recommendations: Teach a set of academic vocabulary words intensively across several days using a variety of instructional activities. Many English learners do not have the chance to learn academic vocabulary words in a manner that allows them to use the vocabulary in reading, writing, and class discussions. This often leads to students struggling to understanding text. The Common Core State Standards require students to learn, understand, and apply general and content-area-specific academic vocabulary. English learners must learn academic vocabulary as part of the core curriculum standards. This summary provides steps to carry out the recommendation and identifies potential roadblocks and suggests ways to address them. [For "Teaching Academic Content and Literacy to English Learners in Elementary and Middle School. IES Practice Guide. NCEE 2014-4012," see ED544783.]