Founded in 1999 by William J. Bennett, along with other leaders, K12 offers a traditional program of learning using online technology and traditional content. Many states are offering the K12 program through Virtual Acadamies, with programs that are free of charge to participating families.

eTutor Virtual Learning is an online school providing an in-depth curriculum to students in grades K-12 anywhere in the world. Access to the program is through subscription. Subscribers become part of an online learning community held in high regard by some of the nation's best educators. Ideal for homeschoolers, international students, student athletes and performers, health-impaired, gifted-talented students and those who want to increase or refresh their educational skills, eTutor provides lesson modules in the areas of Language Arts, Mathematics, Science and Social Studies. Subscribers have the option of working at the level of their choice.

A program of Virtual Schools of Excellence, Catholic Virtual is an accredited, online program. They are committed to offering a comprehensive approach to e-learning in a faith-filled environment. The K-12 Program provides college preparatory and career readiness curriculum for all students. The Catholic Religious Education classes follow the standards and guidelines set by the United States Bishops.

Myron B. Thompson Academy is a standards-based virtual school serving all of Hawaii. It is a hybrid K-12 school that provides competency-based courses and standards-driven instruction to students on Kauai, Oahu, Molokai,Maui and Hawai‘i. The K-12 coursework integrates thematic curriculum with problem-solving activities.

L.P.H. Resource Center offers classes for Catholic homeschoolers over the Internet. These classes are designed for mainly 4th-8th graders, but are available to those in higher grades if desired. The classes are kept as flexible as possible.

Montessori for the Earth offers affordable on-line Montessori and homeschool programs and ebooks for parents, homeschool, teachers, and aides by a certified Montessori teacher. Their Montessori on-line Distance Learning programs are designed for parents and homeschoolers, teachers and assistants, educators, administrators, and college students who want to learn about (or review) Montessori education and curriculum so they can incorporate it into their home, classroom, or college studies.

Calvert School is an independent lower and middle school with a curriculum that is designed to challenge capable boys and girls. Children are prepared for secondary school and for a lifetime of learning by mastering the academic basics. Through its financial aid and recruitment efforts, Calvert strives to offer an educational opportunity to students of all socio-economic backgrounds.

Alpha Omega Academy (AOA) is an accredited online academy for grades K-12, with thousands of students enrolled worldwide.

Since 1982, Basic Christian Education has provided a high-quality academic program that is permeated with the Word of God to homeschool families in North America and beyond.

Griggs International Academy is an online Christian school with multiple accreditations. They offer full curricula, teachers who are certified experts in their fields, online high school diploma, and more.

CLASS is a pioneer of the modern home school movement and has helped thousands of families to get started—and succeed—in home schooling. CLASS consists of thousands of home schools throughout the United States and around the world, with students ranging in age from four to adult. CLASS is accredited by the National Association of Private Schools. Graduates are being accepted by leading colleges, universities, and military academies.

This group is for large families using the K-12 curriculum created by Dr. William Bennett. Both homeschooling families and Virtual School families are welcome. It is particularly intended for families with more than 3 children in K-12 as well as additional teens, toddlers and babies. Discussions include both the curriculum and the challenges of implementing it in a large family.

K12HI is a group for Hawaiian islands-based users of the K12 curriculum led by Dr. William J. Bennett. Members include home schoolers and charter schoolers.