All SPL Core Courses Are Open to Public. All of PureSpring Institute’s courses are open enrollment programs available to all interested participants with ministry recommendation. No Enrollment in Leadership Certification Program needed: Complete any PureSpring Institute course and receive a Certificate of Completion (not Certification) for the specified course. Onsite Congregational Courses Available. All SPL Courses may be customized and taught at your church. Learn More Core Course Descriptions. Online Course Registration. HERE