Page "California Institute of Technology" Paragraph 42

The United States National Research Council released its latest Assessment of Research Doctorate Programs in 2010, and 23 of the 24 graduate programs of Caltech were ranked within the top four programs in the nation in their size quartile as determined by both the R95 and S95 rankings.

Of particular note, programs that were placed within the top 10 % of all size programs in that field based on an average of the R95 and S95 rank order include Aeronautics, Astrophysics, Biochemistry and Molecular Biophysics, Bioengineering, Biology, Chemical Engineering, Chemistry, Electrical Engineering, Environmental Science and Engineering, Geology, Geophysics, Materials Science, Mechanical Engineering, Physics, Planetary Science, and Social Science ( Economics ).