Nathaniel Woodthorpe, during his summer internship as an Engineering Intern at GitHub, contributed to enhancing GitHub Classroom by implementing new features and updates that benefit teachers and students. These include setting assignment deadlines which allow teachers to track student progress by capturing the latest commit SHA as a submission, and enabling students to continue work for partial credit without altering the base commit. Additionally, he improved the setup process with Classroom rosters that simplify linking student names to GitHub usernames and added short URLs for assignment invitations, improved assignment views, and performance enhancements. Woodthorpe expressed gratitude towards his mentors and announced his upcoming role as a full-time Platform Engineer at GitHub, while also encouraging applications for future internships.