Based on an earlier study of approaches to training English-as-a-Second Language (ESL) and adult basic education (ABE) instructors, the current report draws implications and makes recommendations for delivering effective staff development. The five implications are that: (1) ABE and ESL teachers, volunteer instructors, and trainers will attend training when they value the content, it is based on their needs, and models adult learning principles; (2) development and use of quality materials requires time and money; (3) determining the effectiveness of training is an often ignored, although essential, component of staff development activities; (4) using a "trainer of trainers" is a cost-effective training model; and (5) understanding how adults learn is essential for ABE and ESL teachers and volunteer instructors. The report discusses the five implications in greater detail and makes specific recommendations for federal, state, and local policymakers and practitioners. Recommendations address aspects of training program design, development, and implementation, and allocation of resources. (MSE) (Adjunct ERIC Clearinghouse on Literacy Education)