At the end of some classes students are filling in a short form and have an ability to give a text feedback to a professor.
We decided to show not only the total number of good or bad reviews but also to show the percentage of 5-star, 4-star, 3-star reviews. It is easier to understand how many great reviews a user got by looking at the relative number than at the absolute one.
For accessibility, I added smileys AND color indication for the reviews. By marking the reviews with smileys we shorten the amount of time needed to find the bad/the best reviews professors use the most. These reviews are the most illustrative as they highlight "the edge cases", the best and the worst part of the education process.