American Olim

Since being in israel ive noticed a big problem with american olim. The kids that come from ages 13-18 tend to stray from the derech (not all but alot) and i think this has to do with the difference bet. american chariedim and israelin chareidim. So if you were parents who wanted to make aliyah but had kids in teenage yrs what would you do? (what is the better thing to do?). I was just wondering b/c i would think the ruchnius of the kids would be more important but hey what do i know. Thoughts?