those who can´t do, teach

So my english class is kind of a disaster. The language institute where I´m teaching is not the highest quality institution, shall we say. Which is why I´m allowed to teach there without working papers. It pretty much just exists to make money. And if people happen to learn another language in the meantime, so much the better. The instruction I received mostly included telling me how slow my students were and how it wasn´t in my best interest to fail anyone, ever, for anything.
There are five people in the class, which would be awesome if they had similar ability levels. But no. One guy is at a conversational level and keeps translating what I say for the rest of the class. Three people are at a similar level, I think I could work with them, but they probably shouldn´t have passed english 1. I think I am teaching basic english 2. I don´t know enough spanish to teach a class in it, so I don´t have that option. But when I took basic spanish 2 , the teacher spoke exclusively in spanish. And I learned so much in that class. But at this school, the students and teachers are mostly native spanish-speakers and they speak in spanish all through the begininng english classes. It is a terrible way to learn. That is how my spanish classes in the US were. We spoke english all through class, and then just had these little moments of speaking in spanish, like it was a special occasion. I think the best thing a class can do is to make you feel like you can speak, and that you have to speak. If you have the option of speaking in your new language or not, you will feel that whatever you say in that language has to be perfect. And you can´t learn a language by learning all the rules and then speaking. You have to start speaking and that´s how you learn. Like a baby starting to speak. The class I sat in on last week didn´t include a lot of speaking by the students. And when they did speak, it was like they were on trial to see if they used the correct grammar. I thought it wouldn´t be hard to do better than that, but these students are at such different levels. Oh yeah, the fifth guy. He might as well have never heard of english. He should also be in another class. The curriculum I have to work with is not good, and it is british english. So the students will learn all about Ceri, who trains for her rugby matches, even though all my students are a hundred times more likely to go to the US than to go to the UK. It is like me learning Spanish from Spain (which is what I´m learning) even though I am in Peru, where the language is actually Castilian. Pronunciation and vocabulary differ as much as between american and british english, I think.
Four of my five students don´t know how to pronounce things. Although now that I´m thinking about it, learning english pronunciation must be way harder to learn because there are no real rules. (Are there rules?) Spanish has pretty straightforward rules about how to pronounce a word and which syllable to stress. English must seem pretty capricious by constrast.

If someone really wants to learn a language, I guess they can do it there. In spite of everything. But these people work all day, and some drive an hour to get here. They don´t have time to do more than come to class for an hour and a half a day. Which is actually a lot, but I don´t know what to do for them. My boss doesn´t care what I do. He said I can´t take the books home, but I should show up a few minutes early to prepare for class. The amount of outside work I´d have to do to make it a good class and to actually address the needs of my students and the amount I´m getting paid for the class are in different universes. I hope they´re not paying too much for the class.