This digest lists guides to non-commercial tests and compilations of such tests to help identify potentially useful non-commercial tests and assessment instruments to measure special characteristics of students. Reliability and validity information is frequently available. The guides reviewed include: (1) "Measures for Psychological Assessment: A Guide to 3,000 Original Sources and Their Applications" by Ki-Taek Chun et al.; (2) "Achievement Tests and Measurement Devices" from the Educational Testing Service Collection Catalog; (3) "Directory of Unpublished Experimental Mental Measures" by B. A. Goldman and J. L. Saunders; and (4) "Tests and Measurements in Child Development: Handbooks I and II" by O. G. Johnson. The compilations reviewed are: (1) "The Experience of Work: A Compendium and Review of 249 Measures and Their Use" by J. D. Cook et al.; (2) "Measures for Clinical Practice: A Sourcebook" by K. Corcoran and J. Fischer; (3) "The Clinical Measurement Package: A Field Manual" by W. W. Hudson; (4) "Measures of Occupational Attitudes and Occupational Characteristics" by J. P. Robinson et al.; (5) "Measures of Political Attitudes" by J. P. Robinson et al.; (6) "Measures of Social Psychological Attitudes" by J. P. Robinson et al.; (7) "Scales for the Measurement of Attitudes" by M. E. Shaw and J. M. Wright; and (8) "Mirrors for Behavior II: An Anthology of Observation Instruments" by A. Simon and E. G. Boyer. (SLD)