Investment in After-School Programs Act of 2008 - Amends the Consolidated Farm and Rural Development Act to direct the Secretary of Agriculture to award grants to local educational agencies, community-based organizations, or other entities to improve, expand, or establish rural after-school programs that provide students with a broad array of activities when school is not in session that improve their academic performance and promote their positive development.
Requires eligible programs to be implemented in active collaboration with the schools the students attend and take place in safe and easily accessible facilities.
Gives grant priority to partnerships between two or more entities eligible for such grants.