Home-schooling, by zealous JW parents, is about the most absolute-sure-fire way to produce kids, and later adults, who are intellectually, emotionally, & ethically messed up to a degree that would shock the most jaded psychiatrist.
Almost inevitably, if you run into a total wack-job wing-nut JW who has been "raised in the truth", you will find he / she was also home-schooled.
Can be. I will say that home school allowed me to fill the time with whatever interested me, and I dug into a lot of topics that I might not have otherwise.
However, I stayed in the cult for years and didn't leave as a teenager. And only when I took a few college classes did I learn about evolution, which I may well not have done had I not gone to college.