This report presents the results of a study of 130 private early childhood programs in 23 states, which are applying for or have received accreditation from the NECPA commission. Data were collected through institutional self-reports; parent, staff, and child surveys; and on-site verification. Results are presented for Phase I programs, which began the accreditation process during 1991-92, and Phase II programs, which began the process in 1993. Institutional self-reports were based on the completion of the Automated Accreditation Indicator System (AAIS) questionnaire, a broad measure of program effectiveness that examines: (1) administration and general operation; (2) professional development and work environment; (3) center environment; (4) health and safety; (5) center records; (6) developmental issues; (7) special needs children; and (8) parent and community involvement. The results indicate that overall compliance rates have improved significantly from Phase I to Phase II, showing that staff are more qualified and that training opportunities, staff salaries, program resources, and parent involvement have risen. (MDM)