If you are interested in homeschooling middle school for free (either completely free, or just certain subjects), here is the list for you!
Science, 6th grade: A free, online course provided by Georgia Virtual Learning.
Science, 7th grade: A free, online course provided by Georgia Virtual Learning.
Science, 8th grade: A free, online course provided by Georgia Virtual Learning.
Kid's Astronomy Online Academy: This astronomy site offers two tracks: Course 1 for ages 7 to 11 and Course 2 for ages 12-18.
Marine Science: A free, downloadable PDF textbook. Recommended for middle/high school students.
Marine Science [Teacher's Guide]: The teacher's guide to the Marine Science curriculum above.
Physics for Middle School: A free, downloadable textbook for middle school students.
Middle School Math: Free online video course for 6th, 7th, 8th grade math as well as Algebra 1.
Math, Grade 6: A free, online, downloadable textbook.
Math, Grade 7: A free, online, downloadable textbook.
Math, Grade 8: A free, online, downloadable textbook.
Math, Grade 6: A free, online course provided by Georgia Virtual Learning.
Math, Grade 7: A free, online course provided by Georgia Virtual Learning.
Math, Grade 8: A free, online course provided by Georgia Virtual Learning.
Robinson Curriculum Book List: Includes links to read/download all books free.
Ambleside Curriculum Book List: Includes links to read/download books free.
The Basic Cozy Spelling Course: A free online spelling curriculum recommended for grades 6 to 8.
Complete Grammar Guide: Great for middle school
The Civil War Curriculum: The Civil War Curriculum is an easy-to-use, interdisciplinary, resource-rich guide for teaching the American Civil War. Explore the lessons online, download free PDFs or purchase a printed book below. For elementary, middle, and high school aged students.
US History Lessons: This is thirteen weeks of FREE History Lessons! These lessons include: The Mayflower Compact, The Declaration of Independence, The Constitution of the United States of America, and The Federalist and Anti-Federalist Papers.
Other Subjects - use these resources for subjects not listed above, or for all your subjects!
Discovery K12: Discovery K12 is an online homeschool platform and curriculum for students from kindergarten through twelfth grade. They offer 7 standard courses including Language Arts, Reading/Literature, Math, Science, History/Social Studies, Visual/Performing Arts, and Physical Education. They offer a Non-Common Core, traditional, secular curriculum that gives students a world-view using today’s cutting-edge technologies.
Learning Aisle: A comprehensive, premium K-12 curriculum and learning materials that is FREE and used by thousands of teachers, parents, coaches and students worldwide!
Ambleside Online: This is a free homeschool curriculum designed to be as close as possible to the curriculum that Charlotte Mason used in her own private and correspondence schools. The curriculum uses as many free online books as possible. Be sure to use the Ambleside Booklist to assist in finding the books for free.
Mater Amabilis: This is a free, structured, Charlotte Mason style curriculum for Catholics.