This chapter examines yoga as a spiritual and a social practice. It considers three institutional contexts for interpreting yoga spirituality: religion, law, and education. Social institutions such as public schools and courts of law must arbitrate interpretive contests by formulating and applying definitions for the purposes of educational policy and legal precedent. In making such determinations, it would be naive to accept all assertions of identity and meaning as full disclosures. Sometimes the same people describe the same practice as “spiritual” or “secular,” depending upon whether the legal context is First Amendment religious free exercise clause protection or establishment clause restriction. Decisions about how to categorize practices rest in large part on pragmatic concerns. This case study invites scholars of spirituality to pay closer attention to how legal and social contexts shape how people think and talk about practices in relation to the interpretive categories of “spirituality,” “religion,” and “secularity.”