A Program Enrollment object in EDA contains summary academic data for a student's registration in an academic program or course of study, such as registration dates, status, credits earned, and GPA1. A Course Offering object represents a specific instance of a course that is offered during a term or semester2. A Program Plan object defines the requirements and structure of an academic program or course of study3. Reference:
1: Education Data Architecture Documentation - Salesforce1
2: EDA Object Reference - Salesforce4
3: EDA Object Reference - Salesforce4