HIGH SCH. MATH refers to the mathematics courses taught in high school. The two crossword solutions for this term are ALG, which stands for Algebra, and CALC, which stands for Calculus. Algebra is a branch of mathematics that deals with symbols and the rules for manipulating those symbols. It is used to describe relationships between variables and constants, and to solve equations. Calculus is a branch of mathematics that deals with the study of change, in the form of functions and their derivatives. It is used to solve problems involving rates of change, such as velocity and acceleration.