What is the churches role in evnagelizing?

I have thoroughly enjoyed the reading for the semester so far and has caused me to think about the ministry I am involved with here at school. My question is regarding to the goal purpose of a church based outreach ministry. I accept and embrace the goal of a corporate gathering of believers for the purpose of preaching, singing, praying, and reading the word. I am wondering what or where is the place of an outreach based ministry that is based from the church and how will this ministry present its self to a group of students who are at best spiritual immature Christians? Is it possible that the ministry of the church may have it priorities off base?