[SamAdams76]

Looks like kids (and teacher) didn't keep track of the calendar back then. They have December 25 pegged as being on a Sunday but actually it fell on a Tuesday. Not only that, but they have December as having only 30 days.

[Benito Cereno]

THe calendar is missing December 2 and 3, and the 29th seems to be highlighted in red for some reason. Perhaps this was someone’s idea of a prank.

[exit82]

They missed the 2nd and the 3rd, also, in addition to the 31st. There are only 28 boxes filled.

[Delta 21]

Not bad for a bunch of Okie’s!

[madison10]

Looks like someone changed the calendar to December before it WAS December given that the turkey and pilgrim stories were still up and November is the month with 30 days. Maybe it was a class joke.

[GeronL]

They were probably out on vacation at the end of December and didn’t care

[Verginius Rufus]

December began on a Saturday in 1917 so the first line is correct. The last line is correct for November 1917. Maybe they did not bother to correct that line because the pupils would not be in class? How many days did they get off over the Christmas to New Year’s period?