By the next morning he has reinstated the regular school calendar.

He is driving the movement to reform the school calendar.

The Mayor's position on the school calendar is politically complicated.

Sports Day is a major fixture in the school calendar.

It is notable for being the first competition of the school calendar.

Portland schools had planned to cut nearly five weeks off the school calendar this year.

Carthusian Day is the main social event of the school calendar.

"Other groups get their holidays listed on the school calendar," he said.

When families became more mobile, the school calendar was standardized.

For example, the school calendar with the long summer vacation.