Dell English, according to the input by Dell Sr., is a place where those running it need not only to work on their wording and language use (by refraining from using language from the bottom of the barrel), but also their English leaves much to be desired - I have marked some of the most obvious (but not all)m mistakes/errors by a so-called native speaker:

Hey Shit Puppet, nice name. Shows a lot of class. I was there visiting when all that crap went down. Mao is a nice enough kid but he blew off his job. No matter what culture, you don't show up for work, you pay the consequences. My son bent over backwards to help him out and all he did was skrew//screw him over. And because he didn't get away with it he is throwing a tantrum like a whiney spoiled brat!! Tellya what, Shit puppet, blow off your current job obligations and then see what happens, or maybe you're a little more responsible!! And no matter what kind of crap you spew on this site, all current teachers, students, parents and staff are happy campers! So before you blow off your big mouth why don't you do a little research. You might not come off as a Shit Head!!! Currently you are committing Liable //libel and slander. Sounds like you need to be taken to court!!!

There are other things about style, slang and even grammar that I have not marked but that do indicate a low educational profile and that they should not be English teachers.

Seems they need to follow an English Language course before they could teach it as so-called native speakers.