The norm actually is for tuition to increase year over year. The 10 year average for tuition increases at all 4 year colleges is something like 8% which is a mind boggling number when compounded over 10 years. I’m not aware of a good reference for a particular college. I am publishing a book on college admissions and part of the research was in-depth data on tuition. I had to update with 2015/2016 data before publishing so I was able to see the delta this year. For private colleges the increase ranged from nothing to as much as $4,000. There are some colleges that lock in tuition but that is not very common