The month calendar on FSD starts on Sunday and ends on Saturday for each week. If the beginning of the month doesn't start on Sunday or the end of the month doesn't end on Saturday than whatever days are a part of the previous/next month are shown in gray with no activity at all.
My suggestion is that the actual dates and activities of those previous/next months are also shown within the context of that month (and possibly in gray so that it is clear they are a part of another month).
EXAMPLE in April, 2015. The first week is comprised on March 29-31 and April 1-4 (03/29-31 are Sun-Tues and are all grayed out). The last week of the month is comprised of April 26-30 (May 1 & 2 are Fri/Sat and are grayed out).
In addition to viewing and reviewing a single month our school must look at whole weeks and when we have to go back and forth on the Calendar View between months (during the first and last weeks of a month) it is time consuming and counterproductive.