Step one: I met with a manager and had a 20 minute interview. They reviewed my resume and asked questions in regards to my priority experience with children, swimming or work in general.
Step two: I was given a handbook at the end of my interview and was told to study the handbook. I had one week you study the handbook. I was then asked to take a short quiz based off of the handbook. I had to score an 85% or above I believe. If you passed, you were hired. If you did not pass, and employee or manager took time to explain what was answered incorrectly and then you were given the chance to retake the quiz.
My interview experience was two part. One was a group interview in their office with one of the managers. They ask very normal interview questions like your past work history, your experience in the water, and what your availability is. You will also be asked if you are Life Guard and CPR certified. You don't need to be before your interview, so it isn't a deal breaker, but you will be required to take the courses early on in your employment,
The second part is in the water with one of the swim instructors. They want to see how quickly you pick up on the lessons and your ability to interact with the kids.
Overall, my experience during the interview process is they want you to fit the job, so be confident in your abilities, show how much you like kids, and give them the enthusiasm they are looking for!