This examination of parent choice among public schools in Massachusetts begins with an expanded version of remarks made by C. L. Glenn to the Board of the National Education Association describing the parent choice options available in Massachusetts and the ways in which they have developed. Approximately four of five minority students in Massachusetts and one of five white students are enrolled in school systems that offer parents an opportunity to make choices about the public school their children will attend and that foster choice through deliberate efforts to increase the distinctiveness of various schools and to provide accurate parent information. Also summarized is C. L. Glenn's testimony before the first hearing of the National Governors' Association (May 3, 1985) concerning the Massachusetts experience in desegregation recruitment. These addresses are followed by enrollment information for magnet schools in Massachusetts and a list of school systems developing plans to expand parent choice. Following the enrollment figures a paper, "Maximizing Parental Choice and Effective Desegregation Outcomes: The Cambridge Plan" (M. J. Alves), describes the voluntary desegregation efforts in Cambridge (Massachusetts). Sixteen tables summarize enrollment information. There is a 16-item list of resources for additional information. (SLD)