LXA used to have a Semester/Trimester Requirement.
They now suggest an 8 Week Association. I never agreed with that personally, but I am just an Alum.
The idea with 8 weeks was to get the Mid-Term Pass or not Grades. If for some reason a New Associate did not have Grades, he was carried over but for one Semester only.
My main Problem with The Short Periods, is how does a New PNA Learn about The Fraternity and The Local History and The Members depending on How Large a Chapter is?
If they do not have to learn anything, then We just become Clubs!