The purpose of this system is to teach high school students basic principles and processes of electric arc welding. Safety features are stressed. The student generally follows a three-step sequence: 1) he views one of the eight demonstration films; 2) he works through a corresponding unit of programed material; and 3) he practices the aspects of welding depicted in the film and programed text. Student self-evaluation is accomplished by means of end-of-unit reviews and performance checklists. Included here are directions for administering the test, the performance checklist, and instructions for rating student welds. Achievement data available from laboratory and field tests indicate that students are able to perform a variety of welding tasks after completing this system. Additionally, 83 percent of the safety features were achieved by at least 85 percent of the students. Attitudes of students and teachers towards the system were found to be positive. (The programed material is not included in this booklet.) (JK)