Most evangelicals believe the answer to that question is obvious: seminaries are responsible. A man who decides he wants to be a pastor should go to seminary, get a degree, and then presto! He’s ready to be a pastor.
Here are several ways that whole congregations can get involved in training pastors:
Seminary training is one way to develop some tools that are useful for pastoral ministry. Specifically, seminary is a good place to learn theology, church history, the biblical languages, and the tools of exegesis.
On the other hand, personal ministry within the local church is absolutely essential training for a pastor. It is in the local church that a man’s character is formed and assessed, that he learns how to disciple and counsel others, and that he learns how to preach and teach.