"Level I classes support the BOC operator skill standard by devoting significant content to the topics of HVAC controls, common opportunities for operational improvements, and building scoping for energy efficiency. The Level I course series provides building operators with knowledge and skill enhancement in the key activities associated with energy efficient building operations. 1001-1006 are core classes, complemented by one of the supplemental classes which are selected by area program administrators to enhance the BOC training experience to specific regions throughout the country."