CMS Modification

I have an excel spreadsheet with a roster of students, schools and contacts. What is the best off-the-shelf CMS programs I can download or buy out there in the market ? I would like to just import my spreadsheet and do some light coding. Do a 3 page write up of the popular ones in the market that is free to sub $1000 price range. Also do a write up on the technical skills required to import and code the system. If you had experience and expertise in some of them feel free to add them.