Mary Jo Messenger, a secondary mathematics teacher at Centennial High School named by the White House as Maryland's 1991 Presidential Awards Recipients for Excellence in Science and Mathematics Teaching, was one of four teachers honored by the Baltimore Gas and Electric Co. at a ceremony in November.

Messenger and the other three winners will each receive $7,500 from the National Science Foundation for their school, a visit to Washington, and a $1,000 award from BG&E.;