I really liked this Bible study except one thing. I didn't agree with is that we are the Bride of Christ. I believe we are the sons of God. I see the Bride as the Jews that will be saved (and added) after the rapture of the church.
This Jesus Washes Feet of the Disciples Theme for preschool is based on John Jesus is the model servant in this passage. He wrapped a towel around his waist, as the household servant would have done in his time, and did the job that a servant would do.