I have never been a church college minister, but I watched a ton of them and been priviledged to know some of the best. I got the "secret" from them.
The success of all college ministries ultimately is what students do with their life after college in terms of honoring the Lord with their lives and being a significant part of a church.
A few years back I visited with the college minister for a church in Seattle that had 1500 students attending their worship (not in the Bible belt). And I have talked with my friend Bruce Venable, college minister at FBC, Lubbock where they have as many as 700 at their Sunday worship.
Their "secret".....it is adult volunteers. They teach, mentor and connect with a wide variety of students. They have them in their homes; they feed and love them. My Seattle friend told me he had 175 adult volunteers! First Baptist, Lubbock has volunteers who have taught in their university Sunday School for years.
I stood in the back of the sanctuary of my church a few weeks ago and an adult who had been a student in our church and was back for a funeral shared how just being there reminded her of the families that had been her "adopted family" who had meant so much to her personally and faith wise.
The more adult volunteers churches have connecting to students the richer that ministry is. The secret is out.......it is adult volunteers.....of all ages!!