In the Mathematics Department, the faculty encourages students to develop the ideas, skills, and attitudes that will enable them to function with confidence and intelligence in a swiftly changing world. In pursuing this goal, teachers strive to instill a sense of excitement for the concepts and aesthetic qualities of mathematics. Deerfield students learn how to solve mathematical problems with a variety of strategies, how to communicate their solutions clearly, how to work effectively on projects with their peers, and how to use technology. The department offers a variety of courses, and places students into a level of mathematics that will provide appropriate challenges and successes. For example, the department teaches three levels of Algebra II, and at the higher end of the spectrum, outstanding students may study college-level mathematics in one-on-one tutorial classes.

For entering freshmen who have been advised to take *Algebra I* (*Math 101* or *Math 102*), the usual sequence of mathematics courses consists of *Math 102* (or *Math 101*), *Math 202* (or *Math 201*), *Math 302* (or *Math 301*) and *Math 402* (or *Math 401*). For entering freshmen who place out of *Algebra I* (*Math 101* or *Math 102*), the usual sequence is *Math 202* (or *Math 201*), *Math 302* (or *Math 301*), *Math 402* (or *Math 401*), and *Math 602* (or*Math 503*). The department will annually guide students in the selection of a program that is appropriate in both content and pace. Accelerated and enriched courses (*Math 203*, *303* and *403*) provide an alternative to the usual sequence and permit advancement towards *AP Calculus* courses (either *Math 602* or *603*) and beyond. Students who are very successful in *Math 401* or *Math 402* or higher courses are eligible to take *AP Statistics*.