We examine longitudinal data from 120,384 students who took a version of the PSAT/SAT in the 9th, 10th, 11th, and 12th grades. We investigate score changes over time and show that socioeconomic status (SES) is related to the degree of score improvement. We note that the 9th and 10th grade PSAT are low-stakes tests, while the operational SAT is a…

Hackathons, the time-bound collaborative project-based competitions increasingly popular with undergraduate CS students, are both transformative and problematic. On one hand, they are unique opportunities to apply skills learned in the classroom to real-world, interest driven projects that celebrate risk taking, collaboration, and playfulness. On…