Hi Adela,
Let me to give you feedback, here we go..
While you have a great idea in your essay, It is only a few grammatical error.
Technically, in my opinion, you didn't answer task responses.
1. First paragraph, you should paraphrase the prompt for your first sentence for delivering your answers to the next sentence. Then, write your opinion briefly (overview/thesis statement) in the following sentence. You don't require to add new topic with your question
How would it look like if we restricted university education only for elite students? . It will make you out of topic.
2.
There are always (at least) two points of view. One of them votes for focusing on quality of education and second for equal chances for everyone.
This sentence can be your thesis statement that represents your idea in your essay (thesis statement). But, you shouldn't put in new paragraph with only one sentence here.
3. Body 1 paragraph, you can explain the reasons if you agree or support the statement that is provided in the prompt. write your idea -> supporting sentences to explain your idea -> reason or example -> then conclusion of your idea in this paragraph (optional)
4. You can strengthen your opinion in third paragraph. This paragraph will represent your position or views. Write it with the same pattern of body 1 paragraph.
5. Conclusion, you can paraphrase your thesis statement, combine with your main ideas in paragraph 2 and 3, and give your suggestion or opinion for closing statement (optional). Related suggestion or opinion with the content of your essay will become a perfect essay.
So, at least, you need 4 paragraph for answering the task responses in IELTS writing task 2.
I hope it helps, good luck then...