Undefined valuable

Hello guys,
I've two models mark_m and setting_m and am try to get some data from setting table and display it in mark view
but when i try i get this kind of error

A PHP Error was encountered
Severity: Notice
Message: Undefined variable: schoolTitle
Filename: mark/view.php
Line Number: 23


A PHP Error was encountered
Severity: Notice
Message: Trying to get property of non-object
Filename: mark/view.php
Line Number: 23

Below is my code;
setting_m.php -- model

PHP Code:

public function get_school() {
   $query = $this->db->query("SELECT sname FROM setting");
   return $query->result();
} 


mark.php -- controller

PHP Code:

function __construct() {
        parent::__construct();
        $this->load->model("student_m");
        $this->load->model("mark_m");
                $this->load->model('setting_m');
        $language = $this->session->userdata('lang');
        $this->lang->load('mark', $language);
    }

public function sch_title(){
        $this->data["schoolTitle"]     = $this->setting_m->get_school();
        $this->data["subview"] = "error";
        $this->load->view('_layout_main', $this->data);
    } 


view.php -- views

Code:

<section class="panel"><?=$schoolTitle->sname?></h1>
           <div class="profile-view-head">
               <a href="#"><h1>
                   <?=img(base_url('uploads/images/'.$student->photo))?>
               </a>

               <h1><?=$student->name?></h1>
               <p><?=$this->lang->line("mark_classes")." ".$classes->classes?></p>

           </div></section>

where am i going wrong please help me

Attached Files

  exam.php (Size: 5.39 KB / Downloads: 104)
  view.php (Size: 23.62 KB / Downloads: 127)
  setting_m.php (Size: 2.16 KB / Downloads: 85)