This evaluation report describes Project P.R.O.B.E., a bilingual education program for four and five year old Spanish speaking children in two Bronx, New York schools. The educational objectives of the program, including the improvement of reading and other curriculum skills, are outlined. Also described are staffing patterns, orientation and training; efforts to achieve parental participation in their children's education; and instructional facilities, materials, and activities. The achievement of the program's objectives is evaluated in terms of student cognitive development and performance on the Boehm Test of Basic Concepts and the James Language Dominance Test, parent involvement and knowledge of parenting skills, and staff mastery of relevant teaching skills. It is concluded that Project P.R.O.B.E. has been successful in achieving its objectives. Reading growth and cognitive development were found to occur through bilingual instruction and a stimulating learning environment. Recommendations are offered for improving the program in the areas of instruction, staff utilization, scheduling, parent workshops, and contact between staff members in the two schools. (GC)