The Concord UU church has an amazing Covenant Group program. It was started 10 years ago and has grown from 6 groups to 14 groups and has over 150 participants. Some folks have left but many of the original members are still active in the groups they started in. All meet once a month and have taken in new members when needed.
When the committee designed the program, it was decided that groups would be ongoing. It wasn't until I became more involved with Small Group Ministry at the district level that I learned that there were churches that started their groups fresh each fall. I was intrigued with this idea and, as chair of the facilitators, I mentioned this idea at one of our meetings. The response I got was unanimous. While everyone would like to meet more people, no one was willing to leave their group. The bonds that have been formed are deep, personal and treasured.
It amazes me at how quickly this happens. When I began a 4-week short-term group to give folks a taste of SGM, I expected to ease them into ongoing groups once our time together ended. No way! This group did not want to break up and so five years later, we are still meeting.
We have tried a couple of things to allow for more interaction. One is a Pot Luck Mix-Up. We open it up to both current SGM participants and to people who just want to try it. After sharing a meal together, we break into groups and discuss the night's topic. This has been very successful. The other thing was to offer all the Covenant group members a chance to switch groups if they so wished. I have only had two people take me up on it.
I can see advantages to short-term groups but I think for that format to be successful, this has to be part of the original plan. I know in our church, we will never change!