CloudBank Classroom is a cloud-hosted, small-scale JupyterHub designed for teaching, built on an open-source interactive computing stack (Python, R, JupyterLab, and related libraries). It provides each learner with a modest allocation of persistent storage, memory, and CPUs as well as seamless authentication through their university’s identity management system, allowing them to log in with existing campus credentials. The environment comes preconfigured with widely used data science tools, enabling students to run code, analyze data, and complete assignments directly in the browser without local setup. Instructors can easily distribute materials, manage assignments, and support learners through integrated tools like nbgitpuller and grading extensions. By removing technical barriers, ensuring equity of access, and offering a consistent, reproducible workflow, the JupyterHub lowers the cost of teaching with data while remaining scalable to support classes of varying sizes.