Using data from the 2011-12 Colorado School Library Survey, our new Fast Facts examines how often endorsed school librarians engage in activities that foster students’ development of 21st-century skills. The results indicate that the most frequent activity across Colorado public school libraries with endorsed librarians, regardless of grade level or enrollment, was “teach students to use digital resources”; 7 in 10 respondents reported helping students develop this skill at least once a week. About 3 in 5 respondents reported that they help students apply critical thinking skills (61%) and use technology to organize and share information (59%) at least once a week.