I personally use Java+Spring, JavaScript+Node, and Python+Flask. However, I would recommend against the Spring and Node options as they take a while to master (

I personally use Java+Spring, JavaScript+Node, and Python+Flask. However, I would recommend against the Spring and Node options as they take a while to master (Spring due to size, and Node due to async programming). I have not used RoR, but everyone I know who has used it recommends it highly, so it would be a solid choice. Also, Python+Django is solid for a course. Django is not my choice of framework, but it's well designed, documented, and comprehensive.