A study examined the influence of preschool reading readiness skills instruction on first graders' reading achievement. The subjects were 52 first grade students who had attended preschool, and their parents. The parents received questionnaires containing 40 reading readiness questions and the children took the California Achievement Test (CAT) in April of their kindergarten year. Results indicated that children who attended preschool and whose parents spent time providing reading readiness skills had only slightly higher CAT scores than did children without such experience, although children with readiness skills did have marginally higher achievement scores. (Sixteen references, the parent questionnaire, and two tables of data are attached.) (RS)