The purpose of this program evaluation was to examine the effects of "Phono-Graphix," an intensive tertiary-level reading intervention, on the basic reading skills of 16 students aged 6 to 17 years who received special education services. Instruction was delivered one-on-one or in small groups of two or three students. Instruction lasted 8 weeks. Students were pre- and posttested using the "Woodcock-Johnson Psycho-Educational Battery-3rd Edition: Tests of Achievement" ("WJ-III ACH"). Results of this program evaluation indicated that the reading skills of students with disabilities improved. Statistically significant gains were made by the elementary and upper elementary/secondary students. The effect size gains were all above 0.39. Results are discussed with regard to effective interventions for students with reading disabilities and implications for future research. (Contains 2 tables.)