I often had students turn in essays using “texting” abbreviations instead of the full word. I always returned such “work” for revision. They don’t teach English grammar any more in schools. Too many schools use this “whole language” garbage instead of teaching how to parse a sentence, when to use apostrophes, etc. I see very intelligent people’s writings with grade-school grammatical errors. It makes one look very ignorant.
Too many students don’t learn to diagram sentences or read recreationally.