"LANGUAGE!"[R] is a language arts intervention designed for struggling learners in grades 3-12 who score below the 40th percentile on standardized literacy tests. The curriculum integrates English literacy acquisition skills into a six-step lesson format. During a daily lesson, students work on six key literacy strands (which the developer calls "six steps from sound to text"): phonemic awareness and phonics (word decoding), word recognition and spelling (word encoding), vocabulary and morphology (word meaning), grammar and usage (understanding the form and function of words in context), listening and reading comprehension, and speaking and writing. The What Works Clearinghouse (WWC) identified one study of "LANGUAGE!"[R] that both falls within the scope of the Adolescent Literacy topic area and meets WWC evidence standards. The one study meets standards with reservations and includes 1,272 students in grades 9 and 10 in one school district in Florida. The WWC considers the extent of evidence for "LANGUAGE!"[R] on the literacy skills of adolescent readers to be small for two domains: reading fluency and comprehension. Two other domains are not reported in this intervention report. Appended are: (1) Research details for Zmach et al., 2009; (2) Outcome measures for each domain; (3) Findings included in the rating for the reading fluency domain; and (4) Findings included in the rating for the comprehension domain. A glossary of terms in included. (Contains 5 tables, 6 endnotes and 5 additional sources.)