function addAcademicAchievement(Achievement $achievement)
 {
     $connectionObject = Connection::getInstance();
     $connection = $connectionObject->get_connection();
     $student_id = $achievement->getStudentId();
     $ol = $achievement->getOl();
     $al = $achievement->getAl();
     $achievement_case = $achievement->getAchievementCase();
     $school_id = $achievement->getSchoolId();
     $stmt = $connection->prepare("INSERT INTO achievement (student_id, school_id, achievement_case) VALUES (?,?,?)");
     $stmt->bind_param("iis", $student_id, $school_id, $achievement_case);
     echo $student_id . " " . $school_id . " " . $achievement_case;
     $result = $stmt->execute();
     $stmt->close();
     $achievement_id = mysqli_insert_id($connection);
     $stmt = $connection->prepare("INSERT INTO acadamic (achievement_id,ordinary_level,advanced_level) VALUES (?,?,?)");
     $stmt->bind_param("iss", $achievement_id, $ol, $al);
     $result = $stmt->execute();
     $stmt->close();
     return $result;
 }