Each student has an advisor (assigned the first year, and then chosen by the student each year thereafter) who serves as a "point person" to coordinate both the academic and personal aspects of each student's Purnell experience. Although the student's advisor is her special supporter, all of the faculty work together as a team for the success of each student.

Unlike most schools where advisors meet with their advisees as a group, at Purnell advisor and advisee meet one on one at least once a week. During these weekly meetings, topics discussed can range from classes and time management to dorm life and friendships. Advisors help support the student and keep her aware of her academic progress. Mid-semester and end of term progress reports are discussed, as well as scheduling of academic courses.

Goal-setting, both academic and personal is coordinated by the advisor and communicated to the entire Purnell team including parents through the advisor.