Physical education is schools are taught by trained professionals who hold certificates that indicate they have passed the requirements to be licensed as teachers in their states.
Many certified physical-education teachers also gain employment teaching in YMCAs/YWCAs, health spas, community or recreation centres, and in private sport clubs.
You do not have to be certified to teach physical education in those” settings, but a teacher certificate is often an advantage in competing for those jobs.
Schools are required to hire persons who are certified in the subject matter they will teach. Although school districts in some states have limited discretion to hire non- certified personnel on a short-term basis, in the long run, the only way to teach in schools is to be a certified teacher.