Blender is a free, open source 3D image software on-par with the majority of industry standard tools like Maya.
Students can build their own assets for game-design
They can use these assets in Roblox or other game engines
There are many.
First, it is challenging to use even for adults, so the learning curve would be steep.
It doesn't offer too much with regard to learning to code or learning game design -- it is just a platform that they can use to help build their games
For this project, it's recommended that we stay away from Blender unless there is a very specific use-case for it.