We love that there is a customization option for the kits. At first, homeschooling intimidated us as a family so we weren't sure where to go. I saw Timberdoodle and used their kits as recommendations for birthday gifts. When we decided to homeschool, we knew we would go with them. We have purchased six elite kits from them and have not been disappointed at all. The preschool kit was perfect for out three year old, we used some of the items as birthday gifts, and we slowly introduced the book work after 1-2 months. It's a great introduction to doing 'school' at home and making it fun.