Seamus: It wasn't easy to split CEDU-RS. It was isolated in the mountains. There was maybe 1-2 public telephones in nearest one horse town. The minute you were gone (keep in mind you lived in a dormitory with upper school narcs and every part of your day was structured and public) they called the Fuzz. (And they knew the only phone options. So those were staked. Also, you couldn't hike on open road) The back way down the mountain (no road, no trails, steep) was impenetrable. We did have escapees who had horrific experiences.
I split twice, the second time successful. The first time was all mistakes. The second I went through woods (but not down back slope of mountain), did not go on open road, did not use public telephones. It was a smart escape but also lucky and I had to live down low for a week before I finally made it to home town.
In any event, it wasn't easy. Also, others who did and got caught then had to do a full time which sucked.