The document discusses pilot testing or field try-outs of curriculums. It explains that pilot testing is used to determine the strengths and weaknesses of a planned curriculum. The pilot testing process provides information on whether a curriculum is ready for full implementation or needs improvements. Curriculum makers use empirical data collected during pilot testing to evaluate whether the material or curriculum is useful, relevant, reliable and valid. The purpose of piloting a curriculum is to ensure it is effective and to make changes before wide distribution, in order to identify sections that work well and sections that need strengthening for the next version.