The Core Class curriculum was developed by the Education Department of Centers for Spiritual Living. Core classes are 8 or 10 weeks in duration—one three-hour class per week. The Foundations of Science of Mind Class is the study of our core spiritual principles with practical applications for everyday life. Foundations is a prerequisite for all other Core classes. While open to all students, these classes also comprise the required course of study for future Centers for Spiritual Living Practitioners and Ministers.