Math

Algebra 1

Larson Algebra 1 (2011 edition)

Algebra 2

Larson Algebra 2 (2011 Edition)

Geometry

Larson Geometry (2011 Edition)

Precalculus

Precalculus with Limits: A Graphing Approach (2003 Edition)

Calculus

Calculus by James Stewart (2003 Edition)

Statistics

(Updated) The Practice of Statistics for the AP exam by Daren Starnes (2019 Edition)