In order to become successful members of society in the United States, students must be able to write effectively. However, many students are unwilling or unable to write by the time they leave high school. Two major factors linked to writing performance include writing attitudes and self-efficacy beliefs. The first objective of this research is an investigation of the effectiveness of an intervention designed to improve writing attitudes, self-efficacy beliefs, and achievement. The second objective is an examination of the relation between those constructs. Participants were given the Writing Attitude Survey, a writing skills self-efficacy scale, and a short writing assessment. Further, 50% of the participants participated in an intervention designed to increase positive writing attitudes, self-efficacy beliefs, and achievement. The study found a significant positive relation between writing self-efficacy and attitudes. The intervention was found to have no effect on the self-efficacy, attitudes, or performance of participants.