$referCustomer = Mage::getModel('rewardpointsreferfriends/rewardpointsrefercustomer')->load($TotalCustomerId, 'customer_id');

$TotalCustomerId = array_unique($customerDi);

                $HighPriCollection = Mage::getModel("customer/customer")->getCollection()
                                                                        ->addAttributeToSelect('*')
                                                                        ->addFieldToFilter('entity_id', array('in' =>$TotalCustomerId))
                                                                        ->setPage($page,$size);





               $referCustomer = Mage::getModel('rewardpointsreferfriends/rewardpointsrefercustomer')->load($TotalCustomerId, 'customer_id');   // model of referral code

                $customerData = array();
                foreach ($HighPriCollection as $campusval)
                {
                    $customerData[$i] = array('entity_id'=>$campusval->getId(),
                                           'student_name'=>$campusval->getName(),
                                           'coll_grad_year'=>$campusval->getCollGradYear(),
                                           'student_pic'=> $customer->getCustomertabSelfee(),
                                           'college_name'=>$campusval->getCollegeName()   // here i want to add referral code of selected students(customers)
                                           );
                              $i++;

                    $college_detail = Mage::getModel("manager/campus")->load($campusval->getGriskCollegeNewId());
                    array_push($CollegeNames, $campusval->getGriskCollegeNewId());

                }
                $HighPriCollection = $HighPriCollection->addNameToSelect()
                                                       ->addAttributeToSelect('customertab_studentpic')
                                                       ->addAttributeToSelect('group_id')
                                                       ->setPage($page, $size);
                $data = array_count_values($CollegeNames);
                if($collegeid!=null)
                {
                        $res['status']  = true;
                        $res['message'] = "High Priority Students";
                        $res['hpstu']   =  $customerData ;
                }else
                {
                    $collegeData = array();
                    $i = 0;
                    foreach ($data as $key => $value)
                    {
                        $college =Mage::getModel("manager/campus")->load($key);
                        $collegeData[$i]['id'] =$college->getId();
                        $collegeData[$i]['college'] = $college->getName();
                        $collegeData[$i]['hpstudents'] = $value;
                        $i++;
                    }
                }