In an organization you do not get the knowledge, had counted on. When choosing courses, the first thing you should do – it view the curriculum, and lesson plans better. Here you can determine for themselves the amount of material taught, subjects taught and the like. Second – how much corresponds to the teaching program: whether there was every teacher's own program for each of the groups or taught strictly according to the curriculum. Supermodel may not feel the same. After all, if the program is not fully proofread for any reason (such as lack of training or illness teacher), then you got less promise you knowledge! The third thing you should know – this is what topics will be addressed within the study you posted.
Generally, the answer to this question is difficult, it is a test. Teacher who will conduct classes or manager of the company, which offers foreign language can not be unaware of the amount of material, its content and its quality. If adequate answer to your question you did not receive, then most likely you will spend time and money wasted. In order to know how much it will cost you a course, you should ask what is included in the tuition fee: the amount that you pay includes the full cost of the course or you have more to spend additional funds (to purchase manuals, tests, audio or video material, etc.). So you can determine for themselves the full cost of the course. Not be superfluous to know about licenses and recommendations (feedback from persons trained in the institution) and read them.