function delete()
{
$status = true;
if (!empty($this->id)) {
instructor::delete_for_class($this->id);
student::delete_for_class($this->id);
trackassignmentclass::delete_for_class($this->id);
classmoodlecourse::delete_for_class($this->id);
student_grade::delete_for_class($this->id);
attendance::delete_for_class($this->id);
taginstance::delete_for_class($this->id);
waitlist::delete_for_class($this->id);
classmoodlecourse::delete_for_class($this->id);
$level = context_level_base::get_custom_context_level('class', 'block_curr_admin');
$result = delete_context($level, $this->id);
$status = $this->data_delete_record();
}
return $status;
}