I like that I can use the curriculum for my three oldest kids who are now 9, 11, and 13. I will continue to use MOH 3 this year and hopefully MOH 4 next year. It is interesting and is a good core for us. It is written from a Biblical worldview. We have learned so much and look forward to starting up again this Fall. I also bought Illuminations which helps me organize MOH and my other subjects.