Members of the president's National Bipartisan Commission on Central America heard a classified briefing yesterday from CIA officials on the long-range prospects for security in the region, according to a spokesman for the commission.

The briefing, one of several scheduled by the State Department, the Defense Department and the CIA, gave the commissioners an intelligence overview of the security situation and did not involve detailed analysis of current events, said public affairs officer Herbert Hetu.

Ten of the 12 commissioners, under the chairmanship of former secretary of state Henry A. Kissinger, also heard a report from Peter McPherson, director of the Agency for International Development, on U.S. assistance in Central America.

The government briefings, which began Wednesday, were combined with discussions on social development in the region with individual non-administration experts.

Yesterday's speakers included Ronald Scheman, assistant secretary for management of the Organization of American States, Dr. Nevin Scrimshaw of MIT, and William Doherty, president of the American Institute for Free Labor Development.

"Generally the speaker gives a 20- or 30-minute presentation and then it's give and take," said Hetu. "The commissioners then ask questions and that turns into a fairly general discussion."

Over the past two days the commission has heard experts speak on population, education, health, nutrition, labor and land reform issues in the area.

During the next two weeks there will be discussions of economic and political developments.

The commission, whose creation was announced by President Reagan July 18 to study the "underlying problems" of Central America, is expected to produce its report by February.It will divide into sub-groups when it travels to the region next month.