Some people will be gone from the class for family events or some such reason. Some may have decided this is just not for them and have found somewhere else to go. We may have some new folks. Some will be regulars who missed last week and some may be new people entirely, who want to be a part of the class.
There will be lots of little changes around us. There always are from week to week in a church class.
But what has changed within us? If you have read Proverbs 31, you know what an amazing woman is described there. How does that effect you? Does it make you more motivated (to be like her) or less motivated (to give up)?
That's what it comes down to, isn't it? It's not about the teacher or even about the material. It's about you.