Khan Academy is a common core based, Completely Free K-12th Grade Curriculum that is completely online. They offer video teaching, graded and tracked progress, and parent resources.
Subjects: Math: algebra, calculus, geometry
Science: biology, chemistry, physics
Social Studies: citizenship, history, the economy
Arts: painting, sculpture
Skills: Thinking & Reasoning: applying information, asking questions, problem-solving
Self-Direction: academic development, goal-setting, self-assessment
Tech Skills: using and applying technology
All of the information is at our fingertips, allowing us to see where our child is struggling or soaring. Video Lessons break down concepts, Testing is Built into the program and all assignments are automatically taught, quizzed & graded. It is Absolutely Common Core.