31.   Donna Hill of Amarillo, Texas, was teaching her students about Presidents Day a few years ago.

32.   For more than two decades, she had refused to teach male students, insisting on sharing her educational insights only with other females.

33.   For years, teachers groups and school administrators have debated whether it makes a difference if students are taught by properly certified teachers.

34.   French teachers in Louisiana and the Mississippi River Valley teach language students about local French history.

35.   He also taught medical students at the State University at Stony Brook, N.Y., Queens Hospital Center and Long Island Jewish Hospital.

36.   Grifith returned to Lancaster and began teaching blind students in the local public schools, as well as teaching music to private students.

37.   GSAMS allows an instructor to teach students in multiple locations simultaneously.

38.   He already teaches several students who approached him in the subway.

39.   He now teaches students at Harvard Medical School and residents at Massachusetts General Hospital how to take cultural issues into account when giving medical care.

40.   He taught students about the Medici, neo-Platonism and astrology.