Out of curiosity, what is the age bracket of the people writing this stuff?
Just out of high school or a couple of years out. Some of these come from student who were already enrolled, and some came from their entrance essays. The community college has open admissions, so their entrance essays are really placement essays to see if they are ready for basic English 101 or if they need remedial work. Oops, sorry, I'm supposed to call it "developmental" work now. I'm one of the regular readers of those placement exams. I'm usually there as an ESL reader but I've also taught the "regular" classes. And all of us read both ESL and native-speaker essays anyway because each essay has to be read at least twice for 2 readers to agree on placement.
At least 60-70% of our applicants need some sort of remedial work, either in reading, writing, math, a combination of those, or all of those.