The gender gap in tech starts pretty early. Look at computer science students: Roughly 4 out of 5 bachelor’s degrees in that field go to men. That’s why the nonprofit Girls Who Code aims to get girls interested at a young age — as early as third grade. Since the organization was founded in 2012, hundreds of thousands of girls have gone through its clubs and summer immersion programs. When COVID-19 canceled in-person classes, they moved totally online. That actually allowed Girls Who Code to grow, and enrollment went up 200%. Marketplace’s Jed Kim speaks with Tarika Barrett, who took over as CEO this year. She said they had to design their new model with the hardest-to-reach girls in mind.