This report describes the procedures used to construct and validate the Standardized Test of Computer Literacy (STCL), a criterion-referenced instrument designed to assess students' computer literacy. Following a statement of the study problem and purpose, a description of the study methodology outlines the use of a 12-step model for development and validation of criterion-referenced tests as a guide for creating the STCL. The procedures discussed include: (1) defining the content and identifying objectives for the areas of computer attitudes, computer systems, computer applications, and computer programs; (2) gathering computer literacy competencies from the literature, a survey of 90 computer education specialists, and the Computer Anxiety Index and the Beliefs About Computers Scale; (3) development of 156 test items by 15 Iowa State University computer literacy specialists; (4) pilot testing involving empirical item analysis based on administration to 44 college students and judgmental item analysis by 9 computing instructors; and (5) collecting reliability, validity, and normative data on the final 80-item test. Results reported indicate that the STCL was both a valid and reliable measure of computer literacy. Twenty-two references are listed. (LMM)