Way back in my review of
The Incredible Space Raiders (From Space!), I mentioned something called the Sliding Scale of Why We're Trusting Kids With This, or SSoWWTKWT. It's been a few months since I said that, and here we finally have it.
I use this scale to measure why the juvenile main characters are the ones to solve the main problem. As such, it only applies to books with kids or teens as the main characters.
The scale goes from 0 to 10, with 0 being "we don't have a reason why adults can't do this, and it's not something kids should really be doing" and 10 being "we have a good reason why this has to be done and the only ones who can do it are the kids". Soooo...
0: By all rights the adults should be doing this, but it's inexplicably being done by kids instead.
1: The adults refuse to believe that anything is going on.
2: The adults believe stuff is going on but refuse to do anything about it.
3: Someone (adults or kids) screwed up, leaving the kids to fix the problems they caused.
4: The adults are trying to help, but not being very effective.
5: There's some handwave making it to where the adults can't fix the problems.
6: The adults are the bad guys and the kids have to stop them.
7: The kids are doing normal kid things (aka the slice-of-life genre).
8: The kids have magic powers or superpowers.
9: The kids are the chosen/prophesied ones, or are isekai'd.
10: The kids are stuck somewhere away from adults, or are the only ones left.
Note that getting a low score on the SSoWWTKWT doesn't necessarily mean you're a bad book; conversely, getting a high score doesn't automatically indicate high quality.
Like with
my post on villain ratings, I'll probably never use this scale to rate anything. However, while we're still here, what I
will do is take a look at each one of them and how it works, so here goes.
0 (By all rights the adults should be doing this, but it's inexplicably being done by kids instead): The worst one, and usually just the fault of bad writing. Note the "inexplicably" bit, which is doing a lot of heavy lifting here; if you get an explanation for it, it turns into another one (usually 5, 6, 8, or 9).
1 (The adults refuse to believe that anything is going on): Annoying, though in certain genres (most commonly horror and magical realism) it does kinda make sense, as real-world adults aren't usually terribly open to the possiblity of magic actually existing. If it's in a genre where such things manifestly do exist, then it's far less acceptable.
2 (The adults believe stuff is going on but refuse to do anything about it): If possible, even more annoying than the previous level. I don't have much to say about this one.
3 (Someone [adults or kids] screwed up, leaving the kids to fix the problems they caused): If it's the adults' problem, shame on them, and they should be fixing it. If it's the kids' problem and it's sufficiently problematic (e.g. they accidentally released some sort of ancient evil), it can be good.
4 (The adults are trying to help, but not being very effective): Unrealistic. My apologies to twelve-year-olds across the globe, but if adults are failing at something, kids aren't going to be much (if at all) better at it.
5 (There's some handwave making it to where the adults can't fix the problems): This one could get its own sliding scale of quality, depending on how handwavey your handwave is. That said, when done well, this can be one of the better ones.
6 (The adults are the bad guys and the kids have to stop them): Can be good. Can also be very, very problematic, depending on the message of your book.
7 (The kids are doing normal kid things [aka the slice-of-life genre]): Quite possibly the most justified out of all of these. Doesn't get a higher spot because it isn't "good reason to trust a kid with dangerous stuff" so much as "stuff normal people trust kids with".
8 (The kids have magic powers or superpowers): Bonus points if the adults don't. More bonus points if there's a reason why the kids do and the adults don't.
9 (The kids are the chosen/prophesied ones, or are portal-fantasied): À la |Harry Potter| or Narnia. Both of these are quite good reasons for the kids to be the one solving the problems, and they're similar enough that I lumped them together.
And finally, 10 (The kids are stuck somewhere away from adults, or are the only ones left): The adults can't fix the problems because they're not here. Or, in some cases, because they're not alive. I consider this the reason that makes the most sense, which is why it's #10. The first option also carries the possibility of the adults arriving like the cavalry at the end; "the cavalry (or equivalent) shows up to save the day" is one of my favorite tropes.
Are there cases that don't fit on this sliding scale? Probably. If anyone ever points any out to me, I'll solve that problem by way of... decimal points.
(Endnote: There's also the forbidden "11: The adults are solving the problems," which I've encountered a grand total of once, in a YA urban fantasy manga.)