Now, you don’t need any HoloLens or some other special type of headset to encounter a mixed reality pictures and videos in the classroom.
Therefore, Microsoft is preparing View Mixed Reality, which is a built-in viewer for Windows 10 which will allow users to see virtual 3D objects in the real world. All you need is to have a PC that can support webcam, we preferr to have a rear camera.
If the teacher wants to show you something like the size of Mars rover, then they can use viewer and provide you a look. The viewer will be available sometime in this fall and you can utilize it on Windows Mixed Reality hardware, which will be released soon.