The Sonlight Core programs have been designed to work with a variety of ages so you have the flexibility to choose a program that most interests and best meets the needs of your student. Sonlight encourages you to choose first based on content. Once you have chosen the content you wish to cover, take a look at our Core Program Chart (http://www.sonlight.com/core-choosing-chart.html ) and look at the recommended grade levels for each Core program that covers that content. You may also wish to view a chart organized by theme here: http://www.sonlight.com/core-program-themes.html . We would also encourage you to read How to Choose the Right Materials for Your Child (http://www.sonlight.com/how-to-choose.html).
You might also wish to gain input from other Sonlight users on the Sonlight Forums at https://forums.sonlight.com/ .
Sonlight's Full-Grade Package for Kindergarten may be a good option for your Kindergartner. It's a complete curriculum in one quick order. All you need to teach one child for one year. It will include daily lesson plans for the entire year. The package will include Sonlight's Core A Program with History, Geography, Language Arts, Bible and Read-Alouds. It will also include carefully-selected Grade K Readers, Handwriting, Math and Science. It also includes Sonlight's best discount! This link will list more details about the package: http://www.sonlight.com/KMSP.html
If you feel a different option for your child would work better for your family or if you need to customize choices because your child is working above or below grade level in specific subjects, please let me know and I will be happy to assist you in customizing Sonlight for your children.