Here's a description of Cornerstone from the company's website:
Because my educational background was in Curriculum Design and Instruction, I began writing materials that we could use to teach our own children. Other families having a similar vision began to encourage us to make these materials available to them. In fact, all the curriculum that I have written to date, have really been written for our own family. I feel so blessed to be part of assisting parents in the preparation of their children for the 21st century.
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