This is fairly standard writing prompt for an entry level college writing class. Most students are required to take this type of class, as it functions as a crash course in college writing. Even strong high school writers will face a steep learning curve in this class.
The prompt wants you to state your current expectations for the writing class, so feel free to write about your current expectations. The professor is likely to care very little about what your expectations are. The professor is looking at how you currently write. He or she is trying to get a handle on how much work each student is going to be. While I can't write your essay for you, I can offer some tips.
Start your essay with something that is going to grab your professor's attention. You want that teacher motivated to finish reading your essay. Start with a question. Start with a quote. Start with a bold statement that is either emotional or controversial.
Have several expectations in mind to write about. This will result in your essay being divided into paragraphs. Do not just write one big long paragraph. Having several ideas divided into several different paragraphs will show your professor that you are capable of depth of thought.
Vary your sentence length and sentence type. Simple sentences are fine, although if you can throw in complex sentences, your writing is that much more diverse and robust. Also, I would not use contractions. Formal writing does not use them.
Finally, leave your reader with a lasting impression. You have to close out your essay with a sentence that clearly shows you are done. Definitely do not write "in conclusion" in that final sentence or paragraph. Your reader is capable of seeing that they are near the end. They don't need the reminder.