Within diverse classrooms, sometimes teachers need extra assistance to reach all students. This quantitative research design was used to determine the affects of math intervention on student achievement. Students in this study were selected by their "Not Met" PASS scores from their 3rd grade year. A survey assessing student attitudes towards math was given to all students. Teachers were also involved in a survey, asking if they felt the school needed a math interventionist. The measuring instruments for this study were pre-assessments, chapter tests, AIMS data, MAP scores, and 2015 ACT scores. The results of the research showed that the use of a math interventionist increased student achievement. All of the students in this study made gains. Appendices include the student survey, teacher survey, and parent letter.