As Artificial Intelligence (AI) systems become embedded in classrooms, advising students, summarizing ethical dilemmas, and even simulating counsel, educators face a question that is at once practical and philosophical: should AI function merely as a guide that supports moral reasoning, or has it begun, often without deliberate decision, to operate as a standard against which moral judgments are measured? This article argues that AI can be a valuable instructional aid in moral education, but that treating its outputs as normative authorities is conceptually and ethically mistaken. Drawing on Pope Leo XIV's 2026 [7] encyclical Magnifica Humanitas, alongside established scholarship in AI ethics and moral-developmental theory, the article contends that machine systems lack the conscience, lived experience, and capacity for responsibility that moral judgment requires. It concludes with a framework for integrating AI into moral education as a guide subordinate to human discernment, rather than a substitute for it.