Because mathematics, music, and Latin are the three universal languages, they are given a special emphasis in classical education and are required of all students every year. As with Latin and music, HLS aspires to have the very best mathematics education possible. Languages develop and discipline the mind to a greater degree than other subjects. Mathematics, like all languages, is cumulative, rigorous, and demanding; it develops logical, accurate, and precise thinking habits. Mathematics is the language of science and the indispensable tool for the study of the natural world. The key to success in all sciences, especially chemistry and physics, is a superior mathematics education.

Arithmetic is the art of counting and calculation. Like the Latin grammar, arithmetic is concrete, based on memorization, and is a small and finite subject. These characteristics make arithmetic appealing to the child’s mind; it is something that he can understand and achieve mastery over. In the trivium model of learning, arithmetic is the focus of grades K-6. Next to the alphabet, arithmetic is the most useful tool students will ever possess. It should not be rushed over in a hurry to get to higher mathematics.

After mastery of the arithmetic, students embark on the study of mathematics, a large and varied subject that includes many topics, such as algebra, geometry, and calculus. Topics from the world of mathematics are suitable for students who have reached the age of abstract thinking in middle and high school.

Many modern textbooks do not observe the distinction between arithmetic and mathematics. Algebra topics are included in texts as early as Kindergarten and obscure the necessary arithmetic skills for each grade. The energy and effort of students are dissipated over a variety of topics, many of which are too abstract for students to understand. Insufficient time is given to basic skills, and students do not experience the satisfaction of mastery learning, nor are they adequately prepared for higher math. A failure to master basics is the cause of the glass ceiling that most students reach in their mathematics education.

Our textbooks and teaching strategies at HLS ensure that students learn arithmetic and mathematics in an age-appropriate scope and sequence, eliminating the aforementioned deficiencies so prevalent in modern mathematics education. We have found the Rod and Staff math textbooks to be the most closely aligned with our goals in arithmetic and mathematics education in grades K-6.

Mathematics is an exact language, one that is unrelenting and unforgiving. Students must overlearn basic math skills in middle school if they are to be successful in high school math. Our textbooks are carefully chosen, and our teachers are committed to the goals of mastery learning in arithmetic and mathematics.

We use College of the Redwoods for Pre-Algebra, Prentice/Hall Classics for Algebra I and II, McDougal Littell Jurgensen for Geometry, and Larson and Hostetler for Pre-Calculus and AP Calculus.

- 7th Grade: Pre-Algebra
- 8th Grade: Algebra I
- 9th Grade: Algebra II
- 10th Grade: Euclidean Geometry
- 11th Grade: Pre-Calculus or AP Calculus (AB or BC)
- 12th Grade: AP Calculus (AB or BC) / AP Statistics *

* Strong math students take pre-calculus their sophomore summer and AB or BC Calculus their junior year. Students completing BC Calculus their junior year typically take AP Statistics or an independent study mathematics course.