The purpose of this study was to train a paraprofessional to implement the Direct Instruction (DI) "Spelling Mastery" (Dixon, Engelmann, & Bauer, 1990a, 1990b) program and to investigate the effectiveness of the instruction delivered by the paraprofessional for students with learning disabilities. We investigated (a) the extent to which the paraprofessional could be trained effectively and efficiently to implement "Spelling Mastery," (b) the effectiveness of the program for students with learning disabilities when instruction is delivered by a paraprofessional, and (c) the extent to which the students with learning disabilities maintained and generalized spelling skills. Results indicate that the paraprofessional was trained efficiently and effectively. The students learned and maintained spelling skills that they generalized to unpracticed words. (Contains 4 tables and 2 figures.)