If I'm think of the same article, I think teacher was another one of those professions. So being a full-time teacher and a part-time worship leader, I guess I'm really in trouble.
I totally agree with worshiptheking and the lack of communication in planning. The pastor at my church usually hasn't even chosen a scripture to preach on until Wednesday each week but I need to have music chosen and distributed to my band by Monday. So most weeks I'm planning music without a clue what the theme of the service will be. You're right, it's very frustrating to be listening to a sermon on Sunday morning and thinking about what I would have planned differently had I know what the scripture was.