This guide is designed to provide teachers and reading tutors with an easy-to-use and practical guide to selecting and using reading assessment tools that (1) provides descriptions of reading assessments for English and Spanish speaking students that can be used to diagnose and identify their reading skills and abilities; (2) helps teachers find instruments that meet their special needs; and (3) encourages the use of assessments to guide instruction. Each assessment is described on one page, with information on the developers of the assessment, its grade level, purpose, key elements, including time required to administer the assessment, and other considerations. The guide includes descriptions of 30 assessments in English and 10 in Spanish. (SLD)