Apparently intent on making a clean sweep of the Reagan Cabinet, the John F. Kennedy School of Government at Harvard has acknowledged plans to present a medal for distinguished public service to Secretary of the Treasury James A. Baker III.

Faculty and students at Harvard raised a chorus of indignation last month over the planned presentation of a medal to Attorney General Edwin Meese III. Meese subsequently postponed an April 9 appearance there. At the time, Kennedy school officials -- who had already announced or presented medals to Secretary of Defense Caspar W. Weinberger, Sen. Edward M. Kennedy (D-Mass.) and former secretary of health, education and welfare Joseph A. Califano Jr. -- said they intended to select further honorees, but had made no specific plans.

But an enterprising Harvard Crimson reporter learned from Baker's speech writer that Baker had been invited as early as mid-February to accept the honor. So Baker will appear in Cambridge, Mass. on May 22 -- two days after the rescheduled date of Meese's appearance. With Friends Like This. . .

One of many Washingtonians who may cringe reading David A. Stockman's new book is Deputy Treasury Secretary Richard G. Darman, the beneficiary of a gracious acknowledgment from the author that might seem to implicate Darman in the story the book tells.

"Dick Darman," writes Stockman, "was a key participant in much of the history herein chronicled. I learned much from him as the story originally unfolded and again as I sought to recapture it in these pages."

On the other hand, writer William Greider should be pleased to discover Stockman's public acknowledgment that their conversations during 1981 -- the basis for Greider's article in The Atlantic -- were in fact tape recorded. Stockman writes that Greider "was kind enough to let me quote extensively from the transcripts of our 1981 conversations . . . . " Beefing Up Security . . .

Washington isn't the only city to think twice about federal security after last week's raid against Libya.

Fear of terrorist reprisals have prompted officials in New York to initiate strict security precautions, at a cost of about $40,000 a month, for what is said to be the largest federal building after the Pentagon, 26 Federal Plaza. Two entrances have been closed and magnetometers have been installed at others.