Algebra I begins with a Pre-algebra concept review and ends with quadratic functions.  Comfortable navigation through each topic is required for success in future math courses.  Make sure your Algebra I skills are solid!

Geometry is the in-depth study of polygons and circles, introduces direct and indirect proofs, and ends with right-triangle trigonometry and conics. 

Algebra II delves into various kinds of functions and their inverses.  These functions are the basis of Precalculus.

Precalculus deals with advanced trigonometric functions and their inverses.  Do you know the unit circle?