It's probably far easier to get 18-24,who do still qualify as
  young people or youth, than it is to handle the red tape of
  doing surveys for people under 18. I don't know about Europe but
  in the USA, the whole thing gets to be a pain in the butt when
  surveying people under legal age to sign stuff. System's stacked
  against kids/teens globally. Gotta start someplace I suppose
  though. Best way I think is right here. Online. Social media.
  Generation Z is here... all online just about. Just ask. I made
  a comment once on a VSauce video about his stuff being the
  future of supplemental education and how self-directed learning
  will eventually be the norm, potentially obliterating
  school-as-we-know it FINALLY. You won't believe the awesome
  responses I got. I think it was on his "Why are things Creepy"
  video. Wanna see how people under 18 think? Just go to the
  youtube comments section. Say something smart. Watch how the
  positive responses you get. We don't need surveys to know that
  things need to change for young people and that they want it.
  But if in doubt, ask. Make a great comment on a popular
  youtuber's channel who just made a video. You may end up with
  hundreds of kids 8-18 responding and you'll know JUST what they
  think. School sucks. They can't make money. They got no rights.
  They're trapped in antiquated systems they can't get out of.
  They're over-tested. Have no independence. Take your pick of
  hot-button topic. You'll get answers. == Ah here we are. It's on
  the "Why are we morbidly curious?" video he did. Look at that
  like number. Look at those comments #'s. Ok it's not a survey.
  But you want raw responses from young people? Here you go.
  Youtube's a great public way to do
  it.[1]why-are-we-morbidly-curious

References

  Visible links
  1. http://icopiedyou.com/wp-content/uploads/2015/12/why-are-we-morbidly-curious.jpg