A two-part report, sponsored by the Northwest Regional Exchange, focuses on the role of technical assistance in educational settings. This document, part II of the report, examines selected change models for establishing technical assistance systems and implications for action. After a brief introduction, the following critical components of technical assistance are discussed: (1) needs assessment (including the problem solving cycle), (2) talent banks (which match clients' skills with those of technical assistance consultants), (3) written agreements, and (4) guidelines for achieving mutual trust and respect. Thereafter, a series of illustrative models for organizational change, resource acquisition, dissemination, and diffusion are presented and discussed. Finally, implications of the data for action are discussed, including establishing criteria for professional behavior as a consultant, evaluating the effectiveness of the technical assistance process, and using a technical assistance consultant effectively. A bibliography is included, along with four illustrative appendixes: (1) a technical assistance written agreement, (2) a list of critical decisions in six phases, (3) steps in developing a change model, and (4) a guide to use of symbols in model building. (TE)