There are several ways to enter this trade. Formal apprenticeships, which are supervised by trade unions or building contractors, teach trainees how to handle different sanding machines and tools and how to apply finishes once the wood has been sanded. Trainees also learn about the various kinds of wood and finishes and which work best together. Some vocational and trade schools offer courses in floor sanding and finishing. On-the-job training is the most common way to enter the trade. New employees begin as helpers and work under a skilled worker. Summer work as a helper is also a good way for high school students to prepare for this career.