} elseif (strpos($column, 'ExtraGrades') !== false) {
                            $periodId = str_replace('ExtraGrades', '', $column);
                            if ($gradeListFromAnotherDivision && isset($gradeListFromAnotherDivision[$periodId][$tblPerson->getId()])) {
                                $data[$column] = implode(', ', $gradeListFromAnotherDivision[$periodId][$tblPerson->getId()])
                                    . ' '