The various instruments used to collect the data are questionnaires, surveys, interviews, observations, and testing. The model or methodology used to gather the data should be a specified step-by-step procedure. It should be carefully designed and executed to ensure the data is accurate and valid.
Questionnaires are the least expensive procedure for external evaluations and can be used to collect large samples of graduate information. The questionnaires should be trialed (tested) before using to ensure the recipients understand their operation the way the designer intended. When designing questionnaires, keep in mind the most important feature is the guidance given for its completion. All instructions should be clearly stated...let nothing be taken for granted.)