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. We love every single work in the PreK kit. The learning tools are great to use while teaching a lesson. We also love that the work is hands on and has activities within each workbook.