Designed to determine to what extent the Educational Resources Information Center (ERIC) products and services are utilized by certified school personnel, this study found that, on the average, 25.1% of the teachers, librarians, counselors, and administrators in three educational service regions in west central Illinois have used Resources in Education, Current Index to Journals in Education, computer searching, and/or ERIC documents. A questionnaire was sent to 2,157 individuals, and the data are based on the 702 usable responses received (a return rate of 33%). Analyses of the data also indicated that: (1) most of the use occurred while respondents were graduate students; (2) respondents used ERIC materials to improve educational practices and for personal research; (3) when job assignment was related to use of ERIC, counselors, administrators, and librarians reported a higher percentage of use than classroom teachers; (4) years of service were generally inversely related to the use of ERIC products; and (5) with one exception, the higher the degree held, the more the individual had used ERIC and performed online database searching. A brief review of the related literature provides additional insight into the degree to which ERIC is used and recognized among school personnel, and some ways to increase awareness of ERIC among school personnel are suggested. A copy of the questionnaire is appended and nine references are listed. (CGD)