51.   Universities canceled classes.

52.   Universities cancelled classes.

53.   When Jackson last week vowed to march on the school, officials canceled classes, fearful of a confrontation.

54.   Other math professors took votes among their students on canceling classes for anti-war teach-ins or Third World strikes.

55.   A nearby school, the Northshore Christian Academy, canceled classes for the day.

56.   After all other teachers and school personnel were accounted for, school officials canceled classes Monday.

57.   All classes were cancelled for the duration of the rally.

58.   Afternoon classes were canceled so students could attend the memorial or watch it on TV.

59.   Although classes were canceled at the University of Florida on Wednesday, the teaching effort was intensified in the football complex.

60.   An arbiter Friday directed the school board and its striking teachers to begin marathon negotiations to resolve an empasse that has cancelled classes for two days.