This study examined: 1) the effectiveness and efficiency of training a paraprofessional to implement Spelling Mastery, 2) the effectiveness of Spelling Mastery with students with learning disabilities, and 3) the maintenance and generalizability of spelling skills. Results indicate that students were able to learn, maintain, and generalize spelling skills following instruction with Spelling Mastery; additionally, paraprofessionals were able to effectively implement Spelling Mastery. (Copyright © 2011, National Institute for Direct Instruction (NIFDI). All rights reserved).