A panel of four education experts selected the 15 most important court cases of 1990 in the field of special education, based on review of approximately 100 reported decisions. The cases deal with attorney's fees, the need to exhaust administrative remedies before taking discipline cases to court, least restrictive environment, reimbursement for placement of student in private school or residential program, and related services. A group of supplementary cases, also felt to deserve mention and review, is also presented. These focus on handling of dangerous students, funding, placement in school closest to home, monitoring reports as public records, parents' right to tape record Individualized Education Meetings, interpretation of policy concerning related services, and parents' rights to sign language interpreting during meetings. The issue of whether litigation will decline in the 1990s is briefly discussed. (JDD)