Public schools opened for the new year Monday in Charles and St. Mary's counties. Calvert County students returned to class last week.

Charles County's new North Point High School for Science, Technology and Industry received members of the class of 2009. Despite construction on Davis Road, which leads to the school, no major traffic tie-ups occurred on the first day of school.

Charles County public school officials said transportation problems were minimal. They fielded about 150 phone calls from parents requesting changes to bus stop locations or reporting crowding on buses.

Of the 258 buses on the roads Monday, seven were too crowded for students to ride in comfortably, said spokeswoman Katie O'Malley-Simpson. In those cases, drivers put three students in a seat. "No one was left behind because the bus was too crowded," said O'Malley-Simpson, adding that bus routes were adjusted as needed for the ride home Monday afternoon.

Elsewhere in Southern Maryland, classes resumed Tuesday at the Calverton School in Huntingtown and at Catholic schools.

The new North Point High School in Waldorf after the first day of classes. The building will anchor a 282-acre campus with a cluster of schools.North Point, which cost $64 million, has a mock hospital room, a hair salon, a genetics lab and a commercial-quality kitchen. Despite construction, no major traffic tie-ups occurred Monday, the first day of school in Charles County, and 258 buses were on the roads, public school officials said.