This curriculum guide provides competency statements/objectives for an 11th- to 12th-grade trade and industrial education course in mechanical systems. The first half of the guide consists of competency statements for the 53 units of the curriculum. Each competency statement consists of a terminal objective and specific objectives for each unit, referenced to the core and supplementary curriculum and to a sequence reference number. Topics covered by the units include history and development, job opportunities, safety, tools, measuring, tubing, pipe, welding, soldering, refrigeration, electricity, wiring, job application, customer relations, heating systems, cooling systems, blueprints, drafting, building and plumbing codes, drainage systems, water systems, business meetings, and social involvement. The second half of the guide consists of 53 competency goals for each skill/subject area, related to objectives and correlated with evaluation measures and references. A bibliography of the references used in the competency lists is included in the guide. (KC)