January 13, 1983

The heads of several predominantly black colleges threatened today to remove them from the National Collegiate Athletic Association because of a new rule requiring athletes to achieve a minimum score on college entrance examinations. The schools are among 16 largely black colleges that are members of the N.C.A.A.'s Division I, the major division. They also threatened to quit the American Council on Education, which backed the N.C.A.A. position. The minimum-score requirement was enacted Tuesday at the N.C.A.A. convention here by the 277 schools in Division I. It was intended, its proponents said, to stem increasingly frequent charges that some of the nation's major athletic colleges were exploiting talented student-athletes.

''It has been a privilege to serve as director of the Arms Control and Disarmament Agency for the past 20 months.

The Dow Jones industrial average, the stock market's most widelyfollowed barometer, yesterday finished barely lower after piercing the 1,100 level for the first time in its history earlier in the session. After opening higher, the blue-chip indicator moved upward and reached its peak for the session at 2:30 P.M. when it was up 16.28 points at 1,100.07. However, the 30 components of the Dow then succumbed to a wave of selling by investors cashing in profits and closed down 0.18 point to 1,083.61. In the previous four sessions, the Dow average climbed 40 points, which included a loss of 8.56 points on Tuesday.

The guards who had been held hostage at the state prison here for 53 hours thanked those among their captors who protected them today, saying the action ''will not soon be forgotten.'' In a meeting with newsmen at Phelps Memorial Hospital Center in nearby North Tarrytown, one of the corrections officers, John McNamara, asked that they be allowed ''only to return to our loved ones.'' They turned and filed off the stage, and within an hour, according to hospital authorities, all of them had been discharged. They had been undergoing psychological evaluation.

An obituary of the pianist William Harms yesterday incorrectly named the college where he taught. It was Manhattanville, in Purchase, N.Y.