This last in a series of three papers on models for communicating and disseminating career education programs highlights models used in four sectors, i.e., business, labor, industry, and government. Focus is on four levels of dissemination: spread, exchange, choice, and implementation. First, the differences in the networks represented by each of the four sectors are covered. Next, the aforementioned levels of dissemination are covered consecutively and include examples of how business, industry, labor, and government are using each level of dissemination to cover career education. Finally, the paper concludes with suggestions regarding the future of disseminating career education. (EM)