What a fun idea: Frontiers for Young Minds is a kid-reviewed science journal.

Or as they themselves say,

Frontiers for Young Minds provides a collection of freely available scientific articles by distinguished scientists that are shaped for younger audiences by the input of their own young peers.

Jeremy Martin explains the idea (and how he ended up as the editor responsible for mathematics section) in more detail on AMS Math Education blog: Communicating Advanced Mathematics to Kids

For example, I recently coauthored a paper with the intimidating title “Oscillation estimates of eigenfunctions via the combinatorics of noncrossing partitions”, which is full of extensions of eigenfunctions, fractional Schrödinger operators, Kreweras complementation, and similar jargon. I summarized it like this: “My coauthors study partial differential equations, which model things like fluid flow and heat dispersion. They draw pictures that look like tangled-up spaghetti, then try to measure the complexity of the equations by counting the holes in the tangle. Well, counting is what I do for a living, and when I saw their pictures, I was able to use what I know about counting to help them solve their problem.” Sure, that’s sweeping a whole lot of things under the rug, but really, that’s what we were doing.

[..] At this journal, the articles are not peer-reviewed. They are kid-reviewed. As you may have guessed from the title of the journal, the target audience consists of kids (ages 8-15), and who better than a prospective reader to tell the author what is working and what needs to be fixed?

Sounds great. We need someone to implement this in Finnish!