Positional plagiocephaly deformities have increased dramatically in all craniofacial clinics in the United States. There are multiple methods for evaluating the degree of deformity, all of which are expensive, time consuming, and have poor reproducibility. We present a clinical classification of plagiocephaly deformities that we have employed since 1998. The classification allows us to quantitate the degree of deformity in these children at any given time, to reliably determine quantitative changes from evaluation to evaluation. The technique is highly reproducible, cost effective and readily understandable to the family, as well as referring physicians.