Plumbing courses teach students how to install, maintain and repair commercial and residential systems. Classes may include learning the use of tools, safety protocols and drafting drainage layouts. Students should learn the benefits of different materials for pipes and fixtures as well.

A diploma is a document granted by any number of institutions, from colleges to technical schools. The intention of a diploma is to show that the holder has successfully completed coursework and has specific knowledge in the relevant subject. Diplomas are often offered and can be completed online.