Concrete is a mixture of cement, water, sand, gravel, crushed rock, or other aggregates. Sometimes, one or more admixtures are added to change certain characteristics of the concrete, such as workability, durability, and time of hardening.
Top 100 Colleges by Highest Tuition. Here are the top 100 most expensive colleges by tuition for the 2008-2009 school year. The latest numbers can be found in our most expensive colleges ranking. Notes: Some colleges like Bates College, Colby College, Middlebury College, and Union College have a comprehensive fee (tuition + room/board).
Public schools run the gamut from small liberal arts colleges to large research institutions. These are the highest-ranked public colleges and universities in the 2017 Best Colleges rankings, listed according to their ranking category. To unlock full rankings, SAT/ACT scores and more, sign up for the U.S. News College Compass! See the Top Public Schools Methodology.