public function seedGrades($batches, $allStudents)
 {
     foreach ($batches as $batch) {
         $students = $allStudents[$batch];
         $totalFailing = 0;
         foreach ($students as $student) {
             if (Studentterm::getOneGrades($student->studentid) > 3.0) {
                 $totalFailing++;
             }
         }
         $newCorrelation = new Correlation();
         $newCorrelation->factorid = 2;
         $newCorrelation->batch = $batch;
         $newCorrelation->ratio = $totalFailing / count($students);
         $newCorrelation->save();
     }
 }
 public function seedHighGrades($batches, $allStudents)
 {
     foreach ($batches as $batch) {
         $students = $allStudents[$batch];
         $totalHigh = 0;
         foreach ($students as $student) {
             $gwa = Studentterm::getOneGrades($student->studentid);
             if ($gwa > 0.0 || $gwa < 3.0) {
                 $totalHigh++;
             }
         }
         $newCorrelation = new Correlation();
         $newCorrelation->factorid = 7;
         $newCorrelation->batch = $batch;
         $newCorrelation->ratio = $totalHigh / count($students);
         $newCorrelation->save();
     }
 }