Not sure why this isn't working. Help is appreciated

var message = '';
var student;
var search;

function print(message) {
  var outputDiv = document.getElementById('output');
  outputDiv.innerHTML = message;
}

function getStudentReport(student) {
  var report = '<h2> Student: ' + student.name + '</h2>';
  report += '<p>Track: ' + student.track + '</p>';
  report += '<p>Points: ' + student.points + '</p>';
  report += '<p>Achievements: ' + student.achievements + '</p>';
  return report;
}

while (true) {
  search = prompt('Search student records:');
  if (search === null || search.toLowerCase() === 'quit') {
    break;
  } 
  for (var i = 0; i < students.length; i += 1) {
    student = students[i];
    if (student.name.toLowerCase() === search.toLowerCase() ) {
      message = getStudentReport(student);
      print(message);
    }
    if (student.length == 0) {
      message = "<h2> Sorry, they don't exist </h2>";
      }
    }
  }