This bulletin edition provides a side-by-side comparison of: (1) statutory provisions of Part B of the Individuals with Disabilities Education Act, as modified by the Education of the Handicapped Act Amendments of 1990 (Public Law 101-476); (2) the U.S. Department of Education's explanation for regulatory changes proposed to implement the statutory revisions; and (3) regulatory language proposed by the Department. Proposed changes to other regulatory provisions are also presented, as developed by the Department based on its experience in administering the Part B program. Minor or technical changes are not included. The side-by-side comparison covers definitions of autism, traumatic brain injury, rehabilitation counseling, social work services, assistive technology device, assistive technology service, and transition services. In the area of transition planning, changes focus on participants in Individualized Education Program (IEP) meetings, content of IEPs, and agency responsibilities. Changes in provisions for the Comprehensive System of Personnel Development focus on adequate supply of qualified personnel, personnel preparation/continuing education, and a data system. Changes in procedural safeguards cover additional state consent requirements, availability of hearing decisions, officials conducting state level reviews, state complaint procedures, complaint procedures a state must adopt, and minimum state complaint procedures. Modifications to the regulations for Child Find for infants and toddlers are also presented. (JDD)