The study compared knowledge of special education laws, policies, and procedures of various groups of 87 elementary and 33 middle school teachers (N=120). Ss were categorized by years of teaching experience, grade levels taught, subjects taught, and sources of information about P.L. 94-142, the Education For All Handicapped Children Act. An instrument was developed and field tested to measure each subject's factual knowledge of P.L. 94-142. Analysis of results revealed that both elementary and middle school teachers showed similar degrees of knowledge of P.L. 94-142. They were knowledgeable in special education laws and policies in slightly over half the facts presented in seven competency areas, regardless of number of years' teaching experience, levels of teaching, subjects taught, or sources of knowledge. As predicted, most teachers missed the items involving transportation and the components of the individual education program. The 30-item questionnaire is attached. (CL)