Big Blue Swim School is a national swim-lesson franchise whose O'Fallon location offers year-round weekly swim lessons for children ages 3 months to 12 years in warm-water pools with small student-to-teacher ratios. It is a swim-lesson school rather than a summer camp.
The practical details
We list only what the camp itself publishes, and programs change — dates, prices, ages and availability can all move after we check. Confirm the details on the camp’s own website and contact Big Blue Swim School directly before you register or pay. Last checked August 2026.
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★★★★★Karen RosselotBig Blue Swim School has impressed us with their communication, cleanliness of the facility, friendliness of staff & easy to use app. My 4 yr old grandson loves the classes & teachers and has made noticeable progress in under 2 months. Money well spent!
★★★★★Kristina McMillinHands down the best swim school in the area! We have an extremely adventurous 5 year old and an extremely timid 3 year old. We have tried private lessons and a couple other swim schools in the area and they all resulted in constant crying from our 3 year old. He typically loves water and the pool but something about lessons without mama he just couldn’t do. Until we tried Big Blue. He walked right in and smiled the ENTIRE class! Our 5 year old, she loves everything but she even told me she loved lessons here. Every team member is incredibly nice and the facility is so clean. I promise Big Blue is worth it and you won’t be disappointed!
★★★★★JJ ColquittBig Blue is a great school and provides a great program to help your child improve no matter what stage they are starting. All the employees and instructors are professional, kind, and makes every effort to accommodate. Definitely recommend to ALL.
★★★★★Erin DesrosiersBig Blue has a great swim instruction program for babies to 12 years. Their teachers are fun and do a great job teaching survival and swimming skills to kids. Class sizes are small so kids get a lot of instruction and practice time each lesson. They offer a variety of lesson times that fit our schedule. They care about their mission and my kids. I highly recommend Big Blue on Highway K. We've had a great experience over the past 3 years.
★★★★★Jamie AndersonWe love the Big Blue Swim School!! Our daughter has progressed so much since starting as a toddler to now at 5 years old. Her instructors are so patient, engaging, and make the lessons enjoyable for the kids. The entire staff is friendly and welcoming. It’s been such a wonderful experience for our whole family. I highly recommend this school.