This is a single subject case study using the method of purposive sampling of a student with Cerebral Palsy, Attention Deficit Hyperactivity Disorder and Speech Impairment. The subject was given the Woodcock Reading Mastery, KeyMath, and Kaufman Test of Education Achievement assessments due to noticeable poor academic performance. Students with Cerebral Palsy often have cognitive deficits. The reason for this investigation was to determine subject’s strengths and weaknesses. By determining his strengths and weaknesses it would be easier to focus instruction and provide support on areas where my subject has the most difficulty. Also, administering multiple achievement tests would determine if my subject’s low performance was due to difficulties in one subject area (such as reading) that was effecting his performance across the curriculum. The purpose for this study was to obtain data that could be reviewed used to provide the instructional support and planning needed to improve his educational achievement. We found that our hypothesis was true; The results showed that he performedsignificantly below average in overall achievement