Cassie Harrelson is a National Sales Consultant at ExploreLearning. Colleagues describe her as "Cassie is an amazing mentor and educational thinker. She consistently listens to teachers to design professional development to meet their needs. She is an avid policy follower and assessment guru. I continue to rely on Cassie's advice and expertise seven years after having initially worked with her." and "I had the pleasure of working with Cassie as an Assessment Specialist for Denver Public Schools. Cassie has a tremendous background in the area of Mathematics and coaching. Her knowledge of policies, Common Core Standards, and research based practices for instruction made her a great asset to our team. Cassie is a great collaborator and communicator. She has a proven track record and is driven to succeed."