For AP (Advanced Placement) math, the 8th grade course of study has been divided in half. For the most part, The Number System, Expressions and Equations, and most of the Geometry has been moved to 7th grade AP. Functions, Statistics and Probability, and the Pythagorean Theorem part of Geometry has been moved to AP Algebra 1.
http://alex.state.al.us/standardAll.php?grade=7&subject=MA2015&summary=2
http://www.ixl.com/standards/alabama/math/grade-7
http://www.ixl.com/math/grade-7
http://alex.state.al.us/standardAll.php?grade=8&subject=MA2015&summary=2
http://www.ixl.com/standards/alabama/math/grade-8
http://www.ixl.com/math/grade-8
http://alex.state.al.us/standardAll.php?subject=MA2015&ccode=AL1&summary=3
https://www.ixl.com/standards/alabama/math/algebra-1