Rewrite the following sentence properly: According to Miller, "betrayal is the only truth that sticks". (Miller, p16).

KIPP is a school model that is proliferating in the United States. It obtains, with relative ease, that students coming from depressed neighborhoods or broken families, without a promising future on their horizon, end up becoming excellent students. Many of these students, in fact, are able to enter prestigious universities in the country.

The secret of the KIPP does not take up the almost Dickensian concept of the letter with blood, nor does it make use of revolutionary subjects. The secret lies in two concepts that, in purity, are surprisingly simple: to foster self-control and to disengage students from their environments, as if they were kept in a bubble in which external information can not penetrate.