| 1901 | 8097 | Northwest Mississippi Community College |  | 4407 | 6547 | 7206 |
| 1902 | 6240 | Northwest Missouri State University | | 2106 | 6333 | 7206 |
| 1903 | 6672 | Northwest Nazarene University | | 2329 | 6547 | 7206 |
| 1904 | 10291 | Northwest Shoals Community College | | 7491 | 6547 | 7206 |
| 1905 | 10809 | Northwest State Community College | | 8216 | 6547 | 7206 |
| 1906 | 9066 | Northwest Technical College | | 5772 | 6547 | 7206 |
| 1907 | 10417 | Northwest Technical Institute | | 7683 | 6547 | 7206 |
| 1908 | 7372 | Northwest University | | 3403 | 6547 | 7206 |
| 1909 | 12398 | Northwestern College Chicago | | 10320 | 6547 | 7206 |
| 1910 | 7393 | Northwestern College Iowa | | 3440 | 6547 | 7206 |
| 1911 | 8852 | Northwestern Connecticut Community College | | 5498 | 6547 | 7206 |
| 1912 | 8414 | Northwestern Health Sciences University | | 4863 | 6547 | 7206 |
| 1913 | 7288 | Northwestern Michigan College | | 3298 | 6547 | 7206 |
| 1914 | 8940 | Northwestern Oklahoma State University | | 5614 | 6547 | 7206 |
| 1915 | 11470 | Northwestern Polytechnic University | | 9104 | 6547 | 7206 |
| 1916 | 6533 | Northwestern State University of Louisiana | | 2042 | 6547 | 7206 |
| 1917 | 21 | Northwestern University | | 29 | 19 | 37 |
| 1918 | 9933 | Northwood Technical College | | 6969 | 6547 | 7206 |
| 1919 | 7079 | Northwood University | | 2957 | 6547 | 7206 |
| 1920 | 9816 | Norwalk Community College | | 6815 | 6547 | 7206 |
| 1921 | 5620 | Norwich University | | 1407 | 5748 | 7206 |
| 1922 | 14596 | NOSSI College of Art | | 13084 | 6547 | 7206 |
| 1923 | 8535 | Notre Dame College | | 5040 | 6547 | 7206 |
| 1924 | 8686 | Notre Dame de Namur University | | 5262 | 6547 | 7206 |
| 1925 | 7548 | Notre Dame of Maryland University | | 3643 | 6547 | 7206 |
| 1926 | 14686 | Notre Dame Seminary Graduate School of Theology | | 13203 | 6547 | 7206 |
| 1927 | 775 | Nova Southeastern University | | 351 | 952 | 1604 |
| 1928 | 15166 | Nueta Hidatsa Sahnish College (Fort Berthold Community College) | | 13782 | 6547 | 7206 |
| 1929 | 11738 | Nunez Community College | | 9430 | 6547 | 7206 |
| 1930 | 15911 | NYC Acting School for TV Film and Theater | | 14649 | 6547 | 7206 |
| 1931 | 12960 | Oak Hills Christian College | | 11053 | 6547 | 7206 |
| 1932 | 12925 | Oak Point University | | 11008 | 6547 | 7206 |
| 1933 | 9009 | Oakland City University | | 5703 | 6547 | 7206 |
| 1934 | 8035 | Oakland Community College | | 4318 | 6547 | 7206 |
| 1935 | 818 | Oakland University | | 764 | 766 | 1270 |
| 1936 | 6589 | Oakton Community College | | 2149 | 6547 | 7206 |
| 1937 | 8198 | Oakwood University | | 4544 | 6547 | 7206 |
| 1938 | 1587 | Oberlin College | | 685 | 2499 | 3054 |
| 1939 | 12009 | Oblate School of Theology | | 9821 | 6547 | 7206 |
| 1940 | 1954 | Occidental College | | 1053 | 2759 | 3407 |
| 1941 | 8231 | Ocean County College | | 4589 | 6547 | 7206 |
| 1942 | 13087 | Oconee Fall Line Technical College (Sandersville + Heart of Georgia) | | 11179 | 6547 | 7206 |
| 1943 | 8111 | Odessa College | | 4420 | 6547 | 7206 |
| 1944 | 10142 | Ogden Weber Applied Technology College | | 7293 | 6547 | 7206 |
| 1945 | 11178 | Ogeechee Technical College | | 8719 | 6547 | 7206 |
| 1946 | 7271 | Oglala Lakota College | | 3259 | 6547 | 7206 |
| 1947 | 7216 | Oglethorpe University | | 3183 | 6547 | 7206 |
| 1948 | 13643 | Ohio Business College | | 11901 | 6547 | 7206 |
| 1949 | 9295 | Ohio Christian University (Circleville Bible College) | | 6113 | 6547 | 7206 |
| 1950 | 8665 | Ohio Dominican University | | 5230 | 6547 | 7206 |
| 1951 | 4197 | Ohio Northern University | | 2152 | 6547 | 4872 |
| 1952 | 35 | Ohio State University | | 42 | 68 | 46 |
| 1953 | 12667 | Ohio Technical College | | 10664 | 6547 | 7206 |
| 1954 | 556 | Ohio University | | 371 | 579 | 967 |
| 1955 | 3636 | Ohio Wesleyan University | | 1690 | 5389 | 5079 |
| 1956 | 7542 | Ohlone College | | 3639 | 6547 | 7206 |
| 1957 | 8157 | Oklahoma Baptist University | | 4482 | 6547 | 7206 |
| 1958 | 7593 | Oklahoma Christian University | | 3693 | 6547 | 7206 |
| 1959 | 7710 | Oklahoma City Community College | | 3872 | 6547 | 7206 |
| 1960 | 5393 | Oklahoma City University | | 2771 | 6547 | 6191 |
| 1961 | 8482 | Oklahoma Panhandle State University | | 4957 | 6547 | 7206 |
| 1962 | 365 | Oklahoma State University Stillwater | | 217 | 375 | 634 |
| 1963 | 9221 | Oklahoma Wesleyan University | | 6002 | 6547 | 7206 |
| 1964 | 467 | Old Dominion University | | 239 | 481 | 907 |
| 1965 | 8704 | Olivet College | | 5286 | 6547 | 7206 |
| 1966 | 6434 | Olivet Nazarene University | | 1882 | 6547 | 7206 |
| 1967 | 7880 | Olympic College | | 4126 | 6547 | 7206 |
| 1968 | 6771 | Oral Roberts University | | 2476 | 6547 | 7206 |
| 1969 | 6946 | Orange Coast College | | 2752 | 6547 | 7206 |
| 1970 | 10935 | Orangeburg Calhoun Technical College | | 8397 | 6547 | 7206 |
| 1971 | 9839 | Oregon Coast Community College | | 6856 | 6547 | 7206 |
| 1972 | 12422 | Oregon College of Oriental Medicine | | 10358 | 6547 | 7206 |
| 1973 | 248 | Oregon Health & Science University | | 366 | 190 | 246 |
| 1974 | 4047 | Oregon Institute of Technology | | 2732 | 6451 | 4529 |
| 1975 | 119 | Oregon State University | | 62 | 138 | 327 |
| 1976 | 9134 | Oregon State University Cascades | | 5878 | 6547 | 7206 |
| 1977 | 17260 | Orleans Tech Institute | | 16250 | 6547 | 7206 |
| 1978 | 12573 | Otero College | | 10528 | 6547 | 7206 |
| 1979 | 6752 | Otis College of Art & Design | | 2439 | 6547 | 7206 |
| 1980 | 7299 | Ottawa University | | 3318 | 6547 | 7206 |
| 1981 | 6709 | Otterbein University | | 2380 | 6547 | 7206 |
| 1982 | 7372 | Ouachita Baptist University | | 3408 | 6547 | 7206 |
| 1983 | 6436 | Our Lady of the Lake University | | 3739 | 6547 | 6808 |
| 1984 | 7617 | Owens Community College | | 3735 | 6547 | 7206 |
| 1985 | 9778 | Owensboro Community and Technical College | | 6764 | 6547 | 7206 |
| 1986 | 18293 | Oxford Graduate School Dayton | | 17433 | 6547 | 7206 |
| 1987 | 8388 | Oxnard College | | 4802 | 6547 | 7206 |
| 1988 | 7942 | Ozark Christian College | | 4214 | 6547 | 7206 |
| 1989 | 12443 | Ozarka College | | 10374 | 6547 | 7206 |
| 1990 | 7593 | Ozarks Technical Community College | | 3695 | 6547 | 7206 |
| 1991 | 1273 | Pace University | | 537 | 1478 | 2700 |
| 1992 | 7173 | Pacific College of Oriental Medicine | | 3119 | 6547 | 7206 |
| 1993 | 2708 | Pacific Lutheran University | | 1665 | 3976 | 4062 |
| 1994 | 8641 | Pacific Oaks College | | 5210 | 6547 | 7206 |
| 1995 | 10441 | Pacific School of Religion | | 7721 | 6547 | 7206 |
| 1996 | 10509 | Pacific States University | | 7805 | 6547 | 7206 |
| 1997 | 7532 | Pacific Union College | | 3621 | 6547 | 7206 |
| 1998 | 2465 | Pacific University Oregon | | 1334 | 3300 | 4062 |
| 1999 | 8966 | Pacifica Graduate Institute | | 5648 | 6547 | 7206 |
| 2000 | 18493 | Paier College of Art | | 17658 | 6547 | 7206 |
