Because progression through the various subjects in school is time-based, at any given time during the year the teacher is expected to be at a specific point in the textbook or course content but not every student may progress at the same rate.
Tests are administered periodically to ensure students understand the concepts and principles. Test scores often are compared to determine the grades of the students. Unfortunately, when a student does not do well on a test there often is little time for individual assistance as the teacher must move on in order to adhere to the established time schedule.
While traditional, time-based approaches to education have met with varying levels of success over the years, it is an ineffective system when the goal is to train individuals to perform specific, job-related skills. For example, an active, certified engine technician is attending a 3-week training course to learn to maintain a new type of engine, Will attending all sessions during the course ensure the technician can maintain the engine? Of course not! If the technician is unable to attend 2 days of the course, does this mean the technician cannot maintain the engine? Probably not. After 4 days, the technician does poorly on a written test. Should the technician immediately fail the course or should the technician continue with assistance and be given the opportunity to be tested again?
In addition to assessing knowledge, an evaluation of the technician’s maintenance skills also is required. Obviously, the time-based educational system used in traditional aviation schools is not appropriate when conducting aerospce training. A more appropriate approach is competency-based training (CBT) which centered on the introduction of new curricula (instead of a mere repackaging of existing ones), a guaranteed level (gauged on the basis of knowledge and competencies acquired rather than time spent), and connections to the aerospace labor market.
In a traditional educational system, the unit of progression is time and it is teachercentered. In a CBT system, the unit of progression is mastery of specific knowledge and skills and is learner- or participant-centered. Two key terms used in competency-based training are:
Skill -- A task or group of tasks performed to a specific level of competency or proficiency which often use motor functions and typically require the manipulation of instruments and equipment (e.g., cable rigging or torque wrenching). Some skills, however, such as Human Factors and Errors management, are knowledge- and attitude-based.
Competency -- A skill performed to a specific standard under specific conditions.
Models and simulations are used extensively in our competency-based training courses. Airplane pilots first learn to fly in a simulator. Supervisors first learn to provide feedback to employees using role plays during training. Individuals learning to wirelock engine components practice this procedure on a model of an engine. The use of simulators will increase in the future, should the need arise to teach new concepts and procedures at set times to large groups of individuals. Norton (1987) believes that participants in a competency-based training course should learn in an environment that duplicates or simulates the work place. Richards (1985) in writing about performance testing indicates that assessment of skills requires tests using simulations (e.g., models and role plays) or work samples (i.e., performing actual tasks under controlled conditions in either a laboratory or a job setting). Finally, Delker (1990) in a study of industry found that the best approach for training involved learner-centered instruction using print, instructional technology and simulations.
