Rooms and Ratios Tweenie Room Our Tweenie room has 8 children, aged 2-3yrs.With a ratio of 1:4 (always 2 members of staff min) Baby Room Our baby room has up to 6 babies, aged 3mths – 2yrs. With a ratio of 1:3 (always 2 members of staff min) Pre-School Room Our Pre-school room has up to 13 children, aged 3+. With a ratio of 1:8 (always 2 members of staff min) Hallway Outdoor Classroom Dining Room