In this paper, we present a case in which we integrated an intelligent tutoring system- ITS- in a basic mathematics course. The proposed ITS –PrivateTutor- is dynamic, web-based, adaptive, and interactive. It is composed of six different modules; each has a distinct function: student, domain, question, communication, expert, and controller modules. The purpose of this system is not to eliminate the role of human teachers, but to complement their effort in reaching all students and having one-to-one tutoring approach instead one-to-many. An experiment was conducted in order to study the effectiveness of PrivateTutor on class achievement. Students who were enrolled in a “Basic Mathematics” course in the Fall of 2005-2006 and Spring of 2006 at the Lebanese American University were randomly assigned to two groups: control and treatment. The experimental results failed to show any significant positive effect.