Part of English class is writing the big nasty essays, and although they can suck to write, I think they provide an opportunity to create something to be proud of! Below is a button to the online resource page which contains some useful websites to help with your writing! The essay on the left is one of my own from high school, for solidarity.
Another type of assessment that may occur in class are timed writes! These ones can be especially spooky, but writing arguments and substantiating them on the fly is important both conversationally and academically. To the right are just some personal tips I have for both preparation and execution of timed writes :)
Even in English class we aren't exempt from tests and quizzes, unfortunately. So, here is a link to a youtube video that I think gives some general but good tips!