In 1989, Maryellen began to search for a philosophically and pedagogically consistent method of Christian education. She found just such a method in the writings of British educator, Charlotte Mason. Maryellen has since become one of the country’s leading experts on Charlotte Mason’s pedagogy and was a primary author of the book, When Children Love to Learn.
In 2000, Maryellen founded Ambleside School of Fredericksburg, Texas, providing children with a Charlotte Mason education and serving as a center for training interested educators from around the world. In response to growing requests for help in establishing Ambleside Schools, in 2005, Maryellen co-founded Ambleside Schools International.