Michael's Informal Test of Student Ability (MITOSA) is a diagnostic evaluative tool for adult students designed to test nine skills abilities in adult students functioning below a tenth grade level. The nine test sections are approximate reading level, understanding of basic math concepts and symbols, general thinking/reasoning ability, eye-hand motor coordination and visual motor integration, discrimination (visual), figure-ground perception, clozure, auditory perception and sequential memory, and written language. Teachers, counselors, or others in the field of adult education can use the assessment guide and reach satisfactory conclusions regarding a student's entry level in reading and writing. Evaluators with some background in diagnostic testing and/or learning disabilities can derive further information from MITOSA results pertaining to a student's learning style. (This tester's manual contains the test items and directions for administering, scoring, and interpreting.) (MN)