-// Compute hometeaching interview stats per month or per quarter
-// If set to 0, stats will be computed per quarter.
-// If set to 1, stats will be computed per month.
-$this->monthly_hometeaching_interview_stats = 0;
+// Frequency of hometeaching interview stats in months
+// This number must evenly divide 12.
+// Examples: Monthly=1 Quarterly=3 Yearly=12
+$this->monthly_hometeaching_interview_stats = 3;