We are a family-run swim business located in Boise, Idaho that has been serving families from all over the Treasure Valley for more than 15 years. We are passionate about educating children and adults of all ages about water safety, basic swimming skills, and stroke development in a safe, positive, encouraging, and FUN environment. We teach small classes in a warm, heated pool with excellent, motivated teachers who work very hard to ensure that children learn how to really SWIM!


Thank you to all of our past clients who took the time to write to us and tell us about their experiences!

"My daughter has ADHD and we have had a hard time finding a swim instructor that was willing and able to work with her behavior. The ladies at Cathy's Lil Fish were wonderful. They kept her focused and motivated and she has been learning some great swimming skills with them. They are patient and kind, and helped her burn off her extra energy. She has learned so much in such a short amount of time. We can't wait for summer to start swimming again." 
 Caralee Beers

"I love the way that Cathy's school teaching swimming. They stay on a level that kids can understand and are excited to do, yet push them enough to get them swimming even when they're very hesitant. My kids also love the underwater pictures they get to take home! I drive all the way from Utah just to have swimming lessons with them. I've tried them in Utah and my kids don't get nearly the good experience they do at this school."
Karena Gardner

"Our kids love coming to Cathy's School for Lil Fish. A year-round question at our house is, "When do swimmng lessons start?" At Cathy's, it is always a positive experience, and we just keep coming back for more. Thanks for making learning to swim so much fun!"
Karine Maynard

"My son was so afraid to put is face in the water and nervous to try anything new. Cathy and Cindy were so good with him. He ended up his second season swimming across the pool all on his own. I was so grateful to find someone so kind and patient and not pushy to teach him to be comfortable with the water. I also like how they teach swimmers' safety so the kids know what to do if they ever end up in an unfortunate situation. We look forward to going to swimming lessons and my son loves to swim now."
Renee Davis

"The past two years of swimming lessons with Cathy's School for Lil' fish have not only improved my kids swimming abilities but their overall confidence. My kids are very shy and timid at first, and they made swimming a very fun, relaxed atmosphere for them while learning at the same time. I have also taken the Mommy and Me class which was amazing. It was great one on one time with my 20 month old and I learned valuable information about swimming safety. We have had 3 different instructors and all were excellent with the kids...my kids are very excited to take lessons again this summer!"
Mandy Peterson

Cathy's School for Lil' Fish is amazing! The atmosphere is very relaxed and personal. The kids get a lot of individual attention. My daughter was terrified of water and by the end of last summer she was swimming the width of the pool, a huge accomplishment! She couldn't have done that without Cathy and the other swim instructors.
Lindsey Wood

"Cathy and Cindy were awesome. They were so gentle with my child but still pushed them to improve. My son had a fantastic time. I think his favorite day was when they took underwater pictures. The most amazing part is they actually got him to go underwater!"
Dana Peterson

"My daughter loved her swimming lessons from Cathy's School for Lil' Fish last summer! We did the "Mommy and Me" class, which was perfect for her first swimming lesson. I could see her confidence building each time she went and by the end she was swimming a few feet underwater by herself. I couldn't believe it! It was a very relaxed atmosphere and the kids were able to go at their own pace. Thanks for making it so fun!"  Thanks!
Brooke Scoville

"My daughters took lesson last year with Cindy and it was an amazing experience. I will never go back to the city pool again!"