The computer science gender gap struggle in Silicon Valley is real. A mere 17 percent of Google’s tech workers are women. It’s 15 percent at Facebook. Similar stats can be found at most of the larger tech companies. Girls Who Code is trying to reverse those digits with an announcement of a major expansion in partnerships today. The non-profit organization that aims to close the gender gap in technology will grow its Summer Immersion Program from 19 sessions reaching 375 girls to 60 sessions reaching 1,200 girls this year.