As mentioned in other posts, please do not post in text talk. This is a good time to practice writing in clear English as a English exam will be required.
Student visa is strict and you can only work x amount of hours. Student visa must be full time and doesn't mean you can stay and work as a nurse at the end of it.
Using a student visa as a means to stay in another country isn't something I would think too much about as generally International fees are very high and most are expected to return back to their own country when completed.