Online PD Teacher Discounts & Savings Explore FREE PD, continuing education discounts, and staff development promotions.Apply your discount code at checkout and save! FREE PD Free online clock hour 50% OFF Self-Study Courses code: FREEDOM $20 OFF Any ONE Purchase code: TRYRENEW 20% OFF Everything code: LIBERTY Some discount codes may not be used together with other promotions. Discount codes can not be used towards university fees.