GCFlearnfree.org

For more than a decade, the GCFLearnFree.org program has helped millions around the world learn the essential skills they need to live and work in the 21st century. From Microsoft Office and email to reading, math, and more, GCFLearnFree.org offers more than 180 topics, including more than 2,000 lessons, 800+ videos, and 55+ interactives and games, completely free.

CK-12

Sheppard Software

Commonsensemedia.org

Common Sense Media helps families make smart media choices. We offer the largest, most trusted library of independent age-based and educational ratings and reviews for movies, games, apps, TV shows, websites, books, and music.  Our Parent Concerns and Parent Blog help families understand and navigate the problems and possibilities of raising children in the digital age.

OpenStax

Peer-reviewed, openly licensed, and 100% free college and high school level textbooks in a variety of subjects, including AP classes

 North Texas Enrichment Center

North Texas Enrichment Center offers core curriculum and enrichment classes, clubs, competitions and private lessons during the school year for homeschool students.