I found a lot of resources at Georgia Virtual Schools in math here.
There are notes and shared assessments for math 1 (algebra 1, some geometry, and probability), math 2 (first half algebra 2, some geometry, and statistics), math 3 (second half algebra 2 and statistics), and math 4 (analytic algebra and trig). There is also Common Core Algebra 1 and Calculus.
In addition there is Language Arts (high school English subjects); Science (Anatomy and Physiology, Astronomy, Biology, Chemistry, Environmental Science, Forensic Science, Oceanography, Physical Science, and several AP courses); Social Studies (American Government, Economics, Psychology, Sociology, World Geography, World History, AP European History, AP Government Comparative, AP World History, US History); World Language(Spanish, French and German);
CTAE/Electives (various); and Middle School (math, English, and Science).
That is a lot of free material.