Hey Molly! Our church has about 150 members, roughly ~200 adults on a Sunday morning. A normal Sunday for us looks like 50-60 kids! Right now we have 7 classrooms broken down like so: 0-11mo (max 6) 1s (max 8) 2s (max 8) 3s (max 10) 4s (max 10) 5s (max 12) 6s-11s (Elementary ages) (max 12) We have 1 service that runs about 85-90 minutes. For each service, I have 2 team members in each classroom, 1 coordinator who runs the service, and at least 2 in check-in. We have 2 junior volunteers who serve as well, but I don't count them towards our adult ratios. Our team serves on a 3 week rotation - serving 1 week then 2 weeks off. We've had this structure for about a year now and it's worked really well for us. Our people get to sit in service more, which is a win! Sometimes this means closing classrooms and combining ages, but it's worth it to us. When one team member can't serve, I ask if they can serve on another week during that month!