"K. Keniston points out that the correlation between the "intellectual climate" of a college and the rate of drug use on its campus is very close. The highest rates are found at small, progressive ... colleges with a high faculty-student ratio, high student intellectual capacity as measured by College Boards, close student-faculty relationships, and considerable value on academic independence, intellectual interest, and personal freedom for students. At a number of such colleges, it is probably true that half or more of the students have tried marihuana or one of the "hallucinogens," but the great majority of the nation's 2,200 colleges have a lower intellectual climate, are often noted for their practical orientation, a relative absence of serious student intellectual pursuit, and an emphasis on fraternity life and sports. It is estimated that between 10 and 25 percent of the students on such campuses use these drugs."  K. Keniston, "Heads and Seekers: Drugs on Campus, Counter-Cultures and American Society," _American Scholar_, 38 (1968-69), p. 98.  Several studies: _J._Amer._Coll._Health Ass._, 17 (1968), p. 47, p. 145, p. 41.