Shouldn’t we require a class for baptismal candidates to make sure their profession is sincere?

We need to be concerned that everyone who comes forward to be baptized understands the gospel and the significance of what they are doing, and we should have pastors and counselors available to talk with them. But baptism is the first step of obedience, not the sign of having reached a level of spiritual maturity. We should be equally concerned that we are not creating extra-biblical barriers to obedience.