A milestone to celebrate: 10 years of GCI!

Tuesday, April 14, 2020

This year we celebrated the best of program milestones—10 years of bringing together 13-17 year old students from around the world into open source software development with our Google Code-in (GCI) contest. The contest wrapped up in January with our largest numbers ever; 3,566 students from 76 countries completed an impressive 20,840 tasks during the 7-week contest!

Students spent their time working online with mentors from 29 open source organizations that provided help to answer questions and guide students throughout the contest. The students wrote code, edited and created documentation, designed UI elements and logos, and conducted research. Additionally, they developed videos to teach others about open source software and found (and fixed!) hundreds of bugs.


  • 2,605 students completed three or more tasks (earning a Google Code-in 2019 t-shirt)
  • 18.5% of students were girls
  • 79.8% of students were first time participants in GCI (same percentage as in 2018- weird!)
  • We saw very large increases in the number of students from Japan, Mongolia, Sri Lanka, and Taiwan.

Student Age

Participating Schools

School NameNumber of Student ParticipantsCountry
Dunman High School138Singapore
Liceul Teoretic ''Aurel Vlaicu''47Romania
Indus E.M High School46India
Sacred Heart Convent Senior Secondary School34India
Ananda College29Sri Lanka

Students from 1,900 schools (yes, exactly 1,900!) competed in this year’s contest; plus, 273 students were homeschooled. Many students learn about GCI from their friends or teachers and continue to spread the word to their classmates. This year the top five schools that had the most students with completed tasks were:


The chart below displays the top 10 countries with students who completed at least 1 task.

We are thrilled that Google Code-in was so popular this year!

Thank you again to the people who make this program possible: the 895 mentors—from 59 countries—that guided students through the program and welcomed them into their open source communities.

By Stephanie Taylor, Google Open Source