Four Walls offers a Core Curriculum program over the course of 20 weeks. This program prepares students in the fundamentals of building maintenance and systems, and the plumbing, carpentry and electrical trades. Students will also learn basic customer service and communication skills in context of the building maintenance industry. Covers the entry fundamentals required by the National Center for Construction, Education and Research (NCCER) for safety and productivity. Core Curriculum is a prerequisite for the HVAC and Electrical classes