"This paper presents the preliminary results of our ongoing study of corrective policy intervention in cluster-based industrial development. At the center of this study is a field experiment that we are conducting in a knitwear cluster in Ha Noi (previously Ha Tay) and a rolled steal cluster in Bac Ninh in Vietnam. In these clusters, we conducted baseline surveys of firms from April to July 2010 and then provided classroom training programs for entrepreneurs in June to August of the same year. The evaluation of the training impacts is expected to reveal whether entrepreneurs in clusters possess basic knowledge of management before the training, what characterizes the entrepreneurs who are more willing and able to absorb new knowledge, whether the training can change entrepreneurs' attitudes toward learning management knowledge, how much entrepreneurs can learn from a short-period training program, and whether the benefit of the training program exceeds its cost, among others."