The purpose of this staff development practicum was to improve the quality of infant and toddler group caregiving by increasing caregivers' knowledge of infant and toddler development and care needs. As a result of the intervention, a healthier, safer, and more stimulating environment for babies was expected; in addition, more professional attitudes and behaviors of caregivers were anticipated. The program was presented weekly for 14 weeks during the spring and summer of 1984. A cooperative-consultative approach was used, with the Child Development Associate (CDA) Competency Standards being employed as a criterion-based self-evaluation tool. Quality of caregiving was assessed before and after the intervention by using the Assessing the Behaviors of Caregivers (ABC) Checklists developed by Honig and Lally (1973). The program resulted in measurable improvements in caregiving behaviors. The child care centers' administration cooperated in making time available to caregivers for staff development and in working with caregivers to improve the environment and the level of caregiving. Related materials, including assessment instruments and workshop outlines, are appended. (Author/RH)