const studentData = [
  {
    name: 'Tim',
    status: 'Current student',
    course: 'Biology',
  },
  {
    name: 'Sue',
    status: 'Withdrawn',
    course: 'Mathematics',
  },
  {
    name: 'Liz',
    status: 'On leave',
    course: 'Computer science',
  },
];

function enrollInSummerSchool(students) {
  /*1. create an array*/
  const studentsArray = [];
  /*2. Go through each object in given array of students */
  for (let i = 0; i < students.length; i++) {
  /*Update the value for each 'status' key */
    Object.assign({status : 'In Summer school'});
  /*populate newly created array */
    studentsArray.push(students[i])
  };
  return studentsArray;
}