That is, within one academic hour you speak English very few minutes. All the rest of the coach says and it develops the other participants of the course. But you pay for all 60 minutes! Situation two: an explanation of the grammar tutor explains a topic of English grammar. Some students or pupils understand it without problems, while others understand some part or nothing. What happens in such cases? Those students who have something wrong must understand ask again, stopping in such-way learning process and forcing others to wait, losing their time. If we take into account that such 'dull' students can be from one to 5 in the group, consisting of 10 person, then count how many time and the money you lose every lesson, if each of these students do not understand at least one item on a topic of English grammar.
And after you have paid for several months! Situation Three: The loss of money and hours of study in case of sickness buying an English language course people do not consider that in their absence, for whatever reason, they lose both money and teaching hours. Some major firms may agree to refund you teaching hours writing you to another similar group learning English. The problem however is that usually such a group of Parallel opened later and you will thus have to wait for it opening. The opening of such courses and groups are always dependent on the number enrolled. Waiting for the opening of such a group you are losing your time and start to forget something, if not all, of what you have already learned.