Many jails and prisons offer inmates different avenues to improve his or her life skills. Do you think that the inmate does not want to part?

Actually they mostly do want to participate, because it's something to do when otherwise you would be stuck in your cell getting even more bored, and you get paid for it.

It has very little or nothing to do with repeat offending. This occurs for entirely different reasons. In my experience, most inmates just can't get it into their heads that they did something wrong, and see no reason not to do it again. Many have a mental problem which is at least part of the reason for their offending. Or they did it on the spur of the moment or out of desperation. It's also extremely hard to get a job afterwards because nobody wants you, and at least being incarcerated again solves that problem for you for a while.

This isn't at all true.

The chances to learn in prison are really quite limited and growing more limited every day. The idea that prisoners are given opportunities to take college courses or even high school courses are mostly urban myths. It is always easy to bash how "easy" prisoners are treated, because they can't vote.

http://www.nytimes.com/2015/04/05/opinion/sunday/put-schools-back-in-prison.html

Here is an interesting proposal which would be rather cheap to implement, video learning provided as an alternative to boredom. You could do the same for everything from pipe fitting to small engine repair.