A Jan. 31 Metro article about Arlington schools adding Italian to their curriculum incorrectly said that there is an Advanced Placement test on Chinese. The AP test in Chinese Language and Culture is in development and is scheduled to be administered starting in the 2006-07 school year.

The Jan. 31 Chess column misspelled the first name of Hungarian player Peter Leko.

The Jan. 31 Ask Amy column incorrectly said that the Food and Drug Administration has approved an HIV test for home use that involves a cheek swab. The FDA has approved a home collection kit that calls for a person to collect blood through a finger prick and then send the sample to a lab. The agency has approved a test that collects oral fluids, but that test cannot be performed at home.

A Jan. 30 article incorrectly said that the Bush administration had granted owners of hydroelectric dams the exclusive right to appeal Interior Department rulings about how dams should be operated. The department has proposed such a right but has not issued a final rule on the proposal.

A Jan. 27 Sports column incorrectly said that outfielder Juan Rivera is with the Washington Nationals. Rivera played with the Montreal Expos before they became the Nationals but was traded in the offseason.

A Jan. 23 Outlook graphic on Social Security said that, as of 2002, 65 percent of Americans relied on Social Security for at least half their income, and 20 percent for all their income. The percentages are for Americans age 65 and older, not for all Americans. The Washington Post is committed to correcting errors that appear in the newspaper. Those interested in contacting the paper for that purpose can send an e-mail to corrections@washpost.com or call the main number, 202-334-6000, and ask to be connected to the desk involved -- National, Foreign, Metro, Style, Sports, Business or any of the weekly sections. In addition, the ombudsman's number is 202-334-7582.