Google Code-in (GCI) provides
students ages 13 to 17 the opportunity to participate in open source
projects. Google has announced the
2019 round of GCI. “New contributors bring fresh perspectives,
ideas, and enthusiasm into their open source communities, helping them
thrive. Throughout the last 9 years, 58 GCI organizations helped 11,000
students from 108 countries make real contributions to open source
projects; and to this day many of those students continue to participate in
various open source communities and many have become mentors themselves!
Some have even gone on to join Google Summer of Code (GSoC).”
Organizations that are interested in mentoring students can apply for GCI
starting October 10. GCI begins December 2, 2019 and ends January 23, 2020.

Source: LWN.net – Google Code‑in 2019