What is the relevance of plumbing schools in society?

Being a plumber is a physically demanding job. People in this profession clean drains and repair faucets and are responsible for fitting, installing, and repairing pipes, fittings, and fixtures. Plumbing is undoubtedly an essential aspect of our lives that allows us to save a lot of expenses in the long run. All buildings, whether our homes, workplaces, or shopping malls, have some plumbing system that needs to be maintained.

https://ptt.edu/blog/why-plumbers-are-significant-for-the-society/