SUMMARY
We describe consultation to a public school district in the form of a systems-wide evaluation of instructional and behavior support practices for students with developmental disabilities. The evaluation targeted (1) the financial costs of educating students out-of-district, (2) an analysis of a representative sample of Individualized Educational Plans, and (3) interviews with and a questionnaire completed by teachers. The primary objective of the evaluation was to determine practice standards in the public school district and to make recommendations to improve service delivery. The format of the evaluative model, respective findings, suggested remedies, and implications for large-scale public school consultation are presented.