TeachInVR is a virtual reality (VR) classroom for remote and co-located group teaching. It supports a range of teaching activities from lectures and student presentations to guided tours, group work and private study. It allows rapid creation of classes through re-use of traditional teaching materials, reducing the barriers for time-constrained teachers. It is also intended as a sandbox environment for exploring teaching concepts that are well supported by, or even unique to, VR. In particular, it provides tools for the spatial arrangement of teaching material and leveraging the spatial properties of VR for learning and recall.