The diagnostic test combines an individual reading inventory, a reading comprehension test, and a work analysis test to determine and verify the basic reading level of students, locate individual reading problems, compare reading comprehension to vocabulary level, and locate deficiencies in phonetic and structural analysis skills. For use in remedial reading or regular classrooms with kindergarten to adult students whose reading levels are between primer and seventh grade, the test provides interesting materials, simple and exact error recording, carefully chosen vocabulary, and easy and flexible test administration. The validity and reliability of the test have been assured through construct validity, correlation of test results with results of other tests and teacher judgement, and comparison of scores on different test sections. The manual includes complete and condensed instructions for test administration and scoring plus variations in testing procedures for large and small groups and for team testing. A sample student profile is also included. The test booklet includes the three tests based on a story about John Bidwell, who went to California by wagon train in the nineteenth century. Also included are brief instructions for administration and scoring, an examiner's copy of the word analysis test, and scoring charts. (SB)