Only 29% of all employees across the most influential U.S. technology companies—Google, Facebook, Twitter, Microsoft, Apple, Amazon, and Intel—are women. But that includes salespeople, service workers, and communications professionals. Companies that break out gender ratio by role report an an even more drastic disparity. At Twitter, 10% of technical workers are women. At Facebook, it’s 16%.

Computer science programs across the country report a similar dearth of women. As of 2012, the last year for which the National Science Foundation has published data, only about 18% of degrees in the field were obtained by women, the lowest percentage of any STEM discipline. But there is one corner of this pale, male landscape that has less of a gender imbalance than others: coding schools. READ MORE: Where Are The Women In Tech? Coding Bootcamps | Fast Company | Business + Innovation.