April 24, 1986

Roll call, the teachers agree, is the most difficult part of the day: Ho Suk Ping He, Yana Katzap, Tkkun Amongi, Azaria Badebr, Rotcheild Boruhov, Eduardo Yun. Eduardo Yun? Sure, the Portuguese-speaking Korean boy who immigrated from Brazil. His adjustment to America has been eased by the presence of other Portuguese-speaking Koreans from Brazil, one of whom also speaks Hebrew, enrolled at Stephen A. Halsey Junior High School, a polyglot school in Rego Park, Queens. ''Even when you get their names right,'' the principal, Domenick Uzzi, said, ''some are from countries where they put first names last, last name first. Impossible.''

The Federal Government today proposed to bar aliens with AIDS from immigrating to the United States. In a proposed regulation published in the Federal Register, the Government would also give American consular officers the authority to require aliens who seek temporary visas to undergo tests for the ailment, acquired immune deficiency sydrome. The Public Health Service proposed to add AIDS to the official list of ''dangerous contagious diseases.'' Under Federal law, an alien with one of the diseases ''shall be excluded from admission into the United States.''

Bond prices fell sharply for the second consecutive trading session yesterday, with market participants worried that the continuing decline of the dollar against the Japanese yen would put upward pressure on American interest rates. Prices of long-term issues, which fell by three points on Tuesday, dropped another point and a half yesterday. As on Tuesday, the foreign exchange market dominated trading in the credit markets. The dollar hit another postwar low against the yen yesterday, trading in New York at 167.70 yen, down from 169.07 Tuesday. [ Page D14. ] Analysts are concerned that the dollar's steep fall against a number of currencies, particularly the yen, will cause foreign demand for government securities to dry up on the eve of what is widely expected to be a record auction of new bonds and notes.

HERE in the Virginia Piedmont, almost in the shadow of the Blue Ridge Mountains, there sits a major historical and architectural treasure that has gone largely undiscovered and unappreciated: Montpelier, the majestic 18th-century mansion where James Madison grew up and later honed the concepts that made him the Father of the Constitution. Next year, the bicentennial of the Constitution, Madison promises to become the Founding Father of the hour after two centuries in the shadows of George Washington and Thomas Jefferson, Madison's friend and neighbor. And Montpelier - relatively obscured all these decades by Jefferson's Monticello and Washington's Mount Vernon - promises at last to become the center of an attention it has never really had. But from the standpoint of the National Trust for Historic Preservation, which acquired the house in 1984 and has been assessing its qualities, the Madison estate is shaping up as far more. To the trust, it is emerging as the object of a new philosophy in the restoration of historic property.

When the members of the Senate Finance Committee first looked at the tax-revision plan their chairman, Bob Packwood, presented them last month, a few items stood out conspicuously. The timber industry, under the Packwood plan, would retain all of its generous tax preferences. Employer-paid fringe benefits would remain tax free. State sales taxes would no longer be deductible. Those are the elements of tax legislation most important to Senator Packwood, an Oregon Republican, and his constituents.