Question about optimal Sprint length

Hi,

could you please help me with the following question?



Optimal Sprint length?

1.It is best to have Sprints of consistent length throughout a development effort.

2. Sprint length is determined during Sprint Planning, and should be long enough to make sure the Development Team can deliver what is to be accomplished in the upcoming Sprint.

3. All Sprints must be 1 month or less.

4.The length of the Sprint should be proportional to the work that is done in between Sprints.

5.Sprint length is determined during Sprint Planning, and should hold the time it will take to code the planned features in the upcoming Sprint, but does not include time for any testing.


Thank you in advance!