Code Like a Girl Act This bill directs the National Science Foundation (NSF) to award competitive grants to institutions of higher education, local educational agencies, or nonprofit organizations to accelerate research efforts to increase understanding of the factors that contribute to the willingness or unwillingness of girls under the age of 11 to participate in STEM (science, technology, engineering, and mathematics, including computer science) activities. The NSF shall also award competitive grants to such institutions and organizations to enter into partnerships with local educational agencies to develop and evaluate interventions in pre-K and elementary school classrooms that seek to increase participation by such girls in computer science activities. The NSF must: (1) ensure that the materials developed under a program that are demonstrated as being effective in achieving grant goals are made available free of charge to the public on an Internet website, (2) convene an annual meeting of participating partnerships to foster greater national collaboration, and (3) furnish such partnerships with technical assistance in meeting grant program requirements.