Since every swim instructor can get a infant swim teaching certificate. However there is a great variation in teaching methods. Some pools offer swim classes from 6 weeks and upwards, but experienced instructors and the consultation bureaux recommend 3 months as the best age to start swimming classes. Instruction should be carried out by qualified teachers who have special training and experience in infant swim education, child development and water safety. Some instructors do the same class over and over again and do a lot of 'free swimming', other instructors have a clear aim in their teaching method so parents and babies can get used to moving in water and the baby gradually learns to really swim.
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The watertemperature should at least be 30 degrees Celsius. In an ideal situation a dip in a spa or Jacuzzi should finish a class, so the babies can warm up again. Procedures such as face submersions, especially those which are controlled by an adult, must be initially limited both in duration and in number for the young child. Once the child can consistently initiate the submersions and can demonstrate competent breath control, submersions can become longer and more frequent.