Unfortunately I do not know of any way to find out that answer today. My children don't attend Round Lake but I assume you would go into the school office tomorrow morning and find out what class your child is assigned. If you are unable to accompany your child to school tomorrow I would call the school at 7:00 AM and see if you can get the information for your child. I would also ask for specific directions on getting to the classroom. There are usually numerous adults around to assist the students in getting to the proper place safely.
Welcome to Lake County and I hope your child has a great first day of school.