<tl;dr>: Read https://www.mediawiki.org/wiki/Google_Code-in/Mentors and add your name to the mentors table and start tagging #GCI-2018 tasks. We'll need MANY mentors and MANY tasks, otherwise we cannot make it.
Google Code-in is an annual contest for 13-17 year old students. It will take place from Oct23 to Dec13. It's not only about coding: we also need tasks about design, docs, outreach/research, QA.
Last year, 300 students worked on 760 tasks supported by 51 mentors: https://blog.wikimedia.org/2018/03/20/wikimedia-google-code-in-2017/
While we wait whether Wikimedia will get accepted, do you have any translation tasks in mind? Important: A translation task must not be possible to complete by machine translation and the mentor must know the language in order to review a student's work.
Tasks should take an experienced contributor 2-3 hours. Read https://www.mediawiki.org/wiki/Google_Code-in/Mentors , ask on the talk page if you have any questions, and add your name to https://www.mediawiki.org/wiki/Google_Code-in/2018#List_of_Wikimedia_mentors
Thanks! andre