We plan on starting CC in the fall. DS will be starting as K4. We observed the 4/5 y/o class last week. The tutor came prepared, was engaging for that age group, and kept them interested for the entire morning. They all participated well for the timeline cards and motions, did a short game for learning the formula for the circumference of a circle, & latin translation. They left the classroom for science and art, which broke up the time well. The show and tell time was precious. We had to leave early, so we didn't get to stay to hear the kids review what they had learned that AM. I think it's all in what you expect out of the program, and what you plan to do with it at home. If you feel you will incorporate the timeline and history statements into what you teach at home, it will definitely prove worth the time. The memorizing of facts seems invaluable at this age, when kids seem to be able to soak up so much.