Diana occurred because a monolingual psychologist tested Spanish speakers in English and used this data to place students in special education classes. The case, filed in 1969, was settled out of court in 1970. The stipulated settlement agreement required that the CDE:
Monitor schools for racial imbalance, Correct any imbalance, Collect data annually, and Use representatives of the Latino community when audits are performed in school districts. At the time of the order, Latinos were over-represented in classes for children with intellectual disabilities, constituting 26% of the total statewide children with intellectual disabilities population, but only 14% of the statewide school-age population in 1967.