not necessarily, but Pastors, teachers, and music directors are more than likely than janitors etc to succumb to a spirit of pride, hence the need to always pray for forgiveness.
I am a Sunday School Teacher and I also play the Keyboard, and unlike the rest of musicians on our worship team I have at least 4 years of classical training. I can tell you, that at times I get irritable and angry with my peers, being puffed up in my knowledge. Added to the fact that people watch you and applaud the worship group. One time I played a variation on some themes, and the Pastor commented that I was like David playing the harp (Big No, No, the ego got blown up). Only constant confession and repentence, and always being cognizant, that that gift which I have was given to me by God, and He can easily take it and give it to someone else mitigates this problem, and I am still not as humble as I should be.
Its only then did I realize that people in lowly positions are not tempted as much as people in visible positions. People in lowly positions are not visible, and they are not thanked and applauded. Most of the time they are ignored and taken for granted. The devil is a shrewd strategist. It is because of this that Jesus said that the first shall be last (indicating the the proud due to temptation and having their spirit lifted up), and the last (the humble) shall be first.
Peter speaks to this matter when he says
1 Peter 5:4-6 (King James Version)
King James Version (KJV)
Public Domain
4And when the chief Shepherd shall appear, ye shall receive a crown of glory that fadeth not away.
5Likewise, ye younger, submit yourselves unto the elder. Yea, all of you be subject one to another, and be clothed with humility: for God resisteth the proud, and giveth grace to the humble.
6Humble yourselves therefore under the mighty hand of God, that he may exalt you in due time:
I am not saying that there aren't humble teachers. I am glad and blessed when I come across such, but the fact is that only those who were the most humble will be the ones getting Preeminence in the Kingdom, whilst those who were proud will be demoted. The question should be, is the most humble pastor, more humble than the most humble janitor?
ps. One time one of the Church toilets got backed up. The sad thing is it was a Saturday and most members were there for some activity. I forgot which activity it was. Well the toilet got backed up. And many refused to take up the task. Luckily someone merciful

took up the task and cleaned it.
Now consider that the person who cleans the church being a church member, does that weekly whenever she gets the time, whilst other members who were there at the toilet clogging had to negotiate and bessech each other as to who would do the job.