The purpose of the study was to determine whether easy or challenging versions of texts, when accompanied by different types of instructional support, improved adolescents' reading comprehension, particularly for students with belowâaverage reading comprehension. The authors examined 293 ninthâgrade students' reading comprehension of 24 leveled texts over a 12âweek intervention in which teachers were randomly assigned to one of two instructional strategies prior to reading: KâWâL or ListenâReadâDiscuss. Students were randomly assigned within classes to read either easy or challenging versions of the texts, and students' text comprehension was assessed after each lesson. General comprehension was assessed before and after the intervention using the GatesâMacGinitie Reading Comprehension subtest. The authors analyzed the texts using Lexile Analyzer, CohâMetrix Text Easability Assessor, and TextEvaluator to compare aspects of concreteness, formality of language, cohesion, and familiarity across versions. Findings revealed that comprehension of the easy and challenging versions was similar for most students, but students in the KâWâL classrooms outperformed students in the ListenâReadâDiscuss classrooms. Only a small subset of students who read significantly below average, many of whom were identified as English learners, benefited from reading the easier versions. The CohâMetrix and TextEvaluator tools indicated that the easier texts had more familiar vocabulary, greater lexical cohesion, fewer academic vocabulary words, and a more conversational tone, but similar grammatical cohesion and concreteness of words. The results suggest that most students, even if struggling with comprehension, can read challenging versions of texts when accompanied by instructional support.