I think the “guarantee admission” statement might be a regional thing. For my state is an absolute overkill and I do not thing is needed. I am looking online now and none of our state schools offers that. They have minimum requirement stated but they do not guarantee admission. Yet, I am not aware of single case of a student of good standing that had trouble getting admitted and I am in a position to know since I am involved with our high school admissions. And in general from the nearby communities and friends I do not know a single student that applied to a guarantee admissions school and they all made it to colleges.