The purpose of this study was to test a methodology that will help Santa Barbara City College (SBCC), California, to validate the course prerequisites that fall under the category of highest level of scrutiny--data collection and analysis--as defined by the Chancellor's Office. This study gathered data for the validation of prerequisites for three courses: (1) CHEM 101, which requires completion of MATH 4 and ENG 70; (2) ECON 101, which requires completion of MATH 100; and (3) FILMST 101, which requires completion of ENG 80 and ENG 70. These three course were chosen in order to ensure there was a large enough number of students participating in the pilot for each of the selected courses. The study aimed to determine which of the two methods of instructors' rating of students is most appropriate for use in the validation of prerequisites, and whether this process can be served by just one of the two suggested approaches: instructors assessment of student readiness or mid-term grades. For CHEM 101, correlation between the assessment and readiness and mid-term grades was only 0.44, whereas for ECON 101 and FILMST 101, the correlations were 0.727 and 0.854, respectively. The authors conclude that it would be sufficient to use just the mid-term grades for assessment, rather than requiring both measures. Student survey appended. (NB)