The work we report focuses on utilizing linguistic profiles of mathematics, science and social studies textbook selections for the creation of reading test specifications. Once we determined that a text and associated tasks fit within the parameters established in Butler et al. (2004), they underwent both internal and external review by language experts and content-area teachers. The external review provided data based on background questionnaires, text and item reviews used to judge representative aspects of topics and linguistic characteristics, and group interviews. Based on this information, the texts were either retained or rejected and items were retained, rejected or reserved for future modification. In the future, retained texts and items can be further analyzed for fit with empirically established text profiles. The following are appended: (1) Text Selection Checklist; (2) Text Profiles; (3) Descriptive Statistics for the Text Selections by Content Area; (4) Sample Texts; (5) AELP Teacher Questionnaire Parts I and II; (6) Textbooks and Assessments in the Classroom; and (7) Text and Item Review Forms. (Contains 12 tables and 9 figures.)