I'm going to guess that like you really enjoy church, but I felt as I read this that, especially at this part "If a kid had to use the restroom, I made sure they went, If it was lunch time, I made sure that they cleaned up after themselves and threw away their trash.", that it was more of a chore to you than something you did because you wanted to.
I suggest a short anecdote instead of simply stating what you did and spending more time on the impact rather than going on a tangent with this line "The bible studies helped educate the kids as well as myself."
Hi, its great to know we shared the same experience. I think you convey your idea clealry, minor adjustments: "volunteered as a chaperone and I had the responsibility of supervising a group of children for approximately six hours a day, five days a week."