The Tribal American Consulting Corporation designed a preschool program for American Indians in Los Angeles, California, which had two major goals: (1) to develop competence and attendant self esteem in both children and parents; and (2) to enable children to succeed in public school. Three curriculum models were used, based upon Indian culture, Montessori, and traditional/Piagetian philosophies. Programs involved preschool, kindergarten, and infant/toddler age groups. Standardized tests were administered by an external evaluator to gather longitudinal data, and to identify strengths and weaknesses. Although the tests were able to identify general language problems, a number of problems were evident from using these tests. Additional data were collected from observations of the students, particularly in their home interactions with parents. As a result of this evaluation, specific roles and responsibilities emerged for the personnel involved: evaluator, supervisor, teachers, and administrator. Specific guidelines for the selection, administration, and use of preschool tests were also developed. (Author/GDC)