Focusing on what policymakers cannot do, rather than on what they should do, this booklet explores the constitutional parameters of the teaching of moral values. Section 1 provides a description of the general rules for legal analysis followed by the courts when dealing with freedom of speech or religion. In the following two sections, these rules are applied to decisions to exclude or include value-laden concepts in school programs. The booklet concludes with a discussion of ways in which the public school system can accomodate a diversity of viewpoints about morality and religion and, in particular, ways to accomodate those who disagree with the official choices made for the public education program. A review of constitutional "Do's and Don'ts" for educational policymakers seeking to establish a value system as part of the public school program is appended. (Author/WD)