Esteban Custodio is a chemical engineer and businessman by profession. He obtained his single-subject math teaching credential at the University of La Verne. He taught high school math in Los Angeles and at the Ontario High School.
He is a single dad of a 12-year-old son who is in seventh grade. He likes to play golf, chess, and tennis. Helping students realize their dreams, by obtaining their high school diploma and pursuing a college degree, is one of his overriding passions.