A study of the Windsor (Ontario) Early Identification Project's (WEIP's) longitudinal results on 464 students who had been kindergarten participants in the original study (1975) is described. Attempts to test the WEIP for use with younger children revealed that the current assessment battery was unsuitable for this age group. Followup of original students through analysis of currently scored date, case study information, and interview and observational inventories indicated that the Windsor Project was performing effectively for kindergarten identification, with high program stability. Other results included that many Ss identified as at risk appeared to remain so throughout their early school career and that referral to special education was made at an early age, with the majority of referrals returning to the mainstream. Among appended material are the modified version of WEIP and a set of bibliographies on early identification. (CL)