public function filterBySchool($school = null, $comparison = null)
    {
        if (null === $comparison) {
            if (is_array($school)) {
                $comparison = Criteria::IN;
            } elseif (preg_match('/[\%\*]/', $school)) {
                $school = str_replace('*', '%', $school);
                $comparison = Criteria::LIKE;
            }
        }

        return $this->addUsingAlias(ReferenceTableMap::COL_SCHOOL, $school, $comparison);
    }