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The quiz covers all the material up to the week of the quiz Sept.30 - Oct.6.

Does this mean that September 29 is the last date, or that the week Sept.30 - Oct.6 is included in this span?

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marked as duplicate by oerkelens, aedia λ, phenry, Robusto, Rory Alsop Jun 19 '14 at 21:07

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

In itself, up to is open to interpretation on this point, different people may understand things differently unless context makes it clear (or the fuller up to and including is used). In your case, however, it isn't an issue because the sentence states that it is specifying a week. So Oct. 6th, the seventh day, is included. – Rupe Jun 19 '14 at 9:59
@oerkelens: this question also asks about using "up to" with a range of values. (And that part doesn't seem to be addressed in any of the answers.) Thus, I disagree that it is a duplicate. – Marthaª Jun 19 '14 at 13:42

I would expect up to to include the end point. If you climbed up to the tree house, I would expect you to be in the tree house or at least at that level.

As another example, if told "Sum all the positive whole numbers up to 5", I would do 1+2+3+4+5=15.

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I would agree with this answer. Example: If someone's bank account was "up to one thousand dollars," that would mean it has been rising and is now equal to one thousand dollars. If floodwaters are "up to my neck," that means the water is exactly at my neck's level. – Blazemonger Oct 3 '11 at 15:49

Up to means up to the point of but not beyond. However, it is sometimes used (in my opinion incorrectly) to mean up to and including. I believe that technically, up to means <, and through means <=.

That said, I think you should definitely study the material through October 6.

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