Class quality varies greatly by program but they are notorious for recruiting people who can barely read or will pass since the real goal is aquiring their hefty federal student loan allowance.

So either classes are dumbed down so they can eventually graduate or fail many leaving them with a gigantic loan amount(most schools try to max this out) and no education cert.

Also, they tend to pay fairly low for teacher faculty while having little prestige or oversight: quality is unlikely in this environment.

However they have top notch recruiting and sale teams.