21.   Classes were canceled at the school, as they were at the Tonganoxie junior and senior high schools.

22.   Classes were canceled for thousands of students around the country after menacing letters, messages and things that looked like explosives were discovered.

23.   Classes were canceled.

24.   Even the high schools canceled classes so teen-agers could stack sandbags.

25.   Ford said that to avoid disrupting student life, there were no plans to cancel classes Monday or Tuesday, though counselors would be made available.

26.   Grocery stores closed and classes were cancelled throughout Puerto Rico as the last stragglers rushed to their hurricane refuges under torrential rains.

27.   In the Fort Worth suburb of River Oaks, Castleberry High School students, whose classes were canceled Wednesday, are expected to return Thursday.

28.   Many American schools overseas canceled classes.

29.   Many districts canceled classes for Tuesday as well.

30.   Many public schools closed earlier, and local colleges and universities canceled classes.