The Certificate in Data Processing (CDP) Examination conducted by the Institute for Certification of Computer Professionals (ICCP) is one of the qualifications for the CDP. The May 1981 administration tested 3,601 candidates at 149 international test sites. Half of the candidates were taking the examination for the first time and were taking all five sections: Data Processing Equipment, Programming and Software, Principles of Management, Quantitative Methods, and Systems Analysis and Design. They earned higher average scores on each of the sections than first-timers taking fewer than five sections and repeaters. First-timers taking fewer than five sections exceeded repeaters on all sections except Data Processing Equipment and Principles of Management. Examination requirements for the CDP were completed successfully by 1,234 (34 percent) of the 3,601 candidates. Fifteen tables which summarize data about testing centers, candidate demographic characteristics, pass/fail statistics, descriptive statistics, difficulty, discrimination, and reliability are included. (Author/PN)