How do I flag up fortnightly repeating cycles?

[Donna]

I work in a school where we have a Week 1/Week 2 cycle. I always forget which
week we're on and want to flag up the relevant week on my calendar on a
fortnightly cycle but can't find a way of doing this. Any suggestions?

 

[Vince Averello]

Create events at the beginning of each week with the week number and repeat
every two weeks

 

[Bob I]

Make an All day event from "monday - friday" of the first week and call
it Week one, and then set the Recurrence to weekly on monday and every 2
weeks, then make another one for the next week the same way but call it
Week Two