Two papers of ours, with former post-doctoral researcher Markeya Peteranetz, and current graduate student Patrick Morrow, have been accepted to SIGCSE’2020, to be presented in March, 2020, in Portland, OR. The paper titles are: “Development and Validation of the Computational Thinking Concepts and Skills Test”, and “A Multi-level Analysis of the Relationship between Instructional Practices and Retention in Computer Science”.