This specially developed Informal Reading Inventory for adults is an individually administered test to be used to measure reading performance from level one through level six. The test is designed to indicate the instructional readability level for teaching purposes. The level derived will correspond closely with a comparable level in a graded reader. Similar inventories may be made by the teacher by selecting graded materials from well-controlled adult literacy training books or pamphlets. The results of such inventories will indicate specific materials in which the student has demonstrated his competence. The parts of the informal inventory are: (1) word recognition and analysis; (2) oral reading to check comprehension, reading errors, vocabulary in context, and speed; (3) listening ability (present potential level); and (4) letter and blend recognition to check the students' visual and auditory perception and discrimination. (Author/DL)