This is what the result should be: http://cdpn.io/Kipxt

1. Create an Select List, name it: Stars Selector
2. Disable Label
3. In value creation, in fineld elements add this code: 
   
   

   ::5 Stars::5%% ::4 Stars::4%% ::3 Stars::3%% ::2 Stars::2%% ::1 Star::1

4. Change fron end display to VALUE
5. Assin the field to the corret type
6. Add to the template
7. And refrsh the page.

:)