The way that state-level postsecondary education agencies currently apply, and could address, the concept of both system-level and institutional missions is discussed. The focus is on how to implement, reinforce, and evaluate established missions. Topics include the consultative process, tools for change, proactive strategic planning, and reasonable expectations for mission review. Telephone interviews were conducted with many state-level postsecondary agencies known to be active in mission-related studies. Broad-based involvement at substantive levels was found, and no agency undertook mission development or maintenance on its own. Four groups of participants were identified: institutional representatives, other campus-based individuals, government officials, and the general population. Although practices varied across states, involvement in mission development and maintenance activities tended to follow common patterns. Stages of involvement in mission review activities are outlined, and examples of involvement patterns are provided. Also considered are: tools for maintaining missions, incentives for implementing missions, and the role of the state agency in strategic planning and mission development. (SW)