Is multi review criteria possible?

[sypie]

My goal is to set up a database with school-practices for teachers. For some practical subject the pupils make a product, some very simple, some very difficult. An example of a simple one is here. (not my site).

I want to give those products a multiple criteria review which would be searchable. For now VM only has one criteria/rating per product. I would like to have more then one line of stars with criteria. For example:

Encourage for pupils:  (3 stars)
Encourage for teacher: (2 stars)
How many lessons: (4 stars)
Self employed working for pupils: (1 star)

Is this possible and if so how?