I've been a substitute teacher at CPS for 2 years. I have observed every demographic and grade level. I felt compelled to write a review after substitute teaching a kindergarten class at Heffern. I cannot compliment the gym teacher enough! Mrs. Rathers-Clark was the kind of teacher that every teacher should observe and reflect. She did a lesson with spaceships that involved teamwork and a hula hoop that called for personal space. She had students stretch and line up, then dance as a class for a warm-up before her lesson started. She was always in control of her classroom management, every student was engaged and it was a pleasure watching such great teaching.