The confluence of No Child Left Behind and the National Reading Panel report on the five essential components of reading instruction forged a path for struggling adolescent readers that supports a narrow curriculum designed to address gaps in constrained skills. Adolescents from a large school district in the state of Tennessee who failed state assessments in reading (N = 94) were assessed using measures of phonemic awareness, decoding, fluency, orthography, vocabulary, and comprehension. Factor and cluster analysis of the assessment data revealed a heterogeneous population of students. Based on three factors (meaning, rate, and word knowledge), four clusters emerged representing varying abilities. (Contains 6 tables.)