create folders and save links to a google sheet

Code.gs

function createFolders(student) {

  var sheet = SpreadsheetApp.getActiveSpreadsheet().getActiveSheet();
  var emails = sheet.getRange(2, student, sheet.getLastRow() - 1, sheet.getLastColumn());
  
  var data = emails.getValues();
  for(var i = 0; i < data.length; i++) {
    
    if(!data[i][2]) {
      
      var folder = DriveApp.getFolderById(REPORTS_ID)
        .createFolder(data[i][0])
        .addEditor(data[i][0])
        .setShareableByEditors(false);
  
      data[i][2] = folder.getUrl();
      
    }
    
  }
  
  emails.setValues(data);
  
}