Kaplan TOEFL CBT tests are really buggy and scores are not accurately calculated:1. The program does not recognize correct answers where more than one answer has to be chosen.2. The program does not retain the essay.2. When shifting from the general test feedback section to a specific section analysis (reading, listening or structure) and back again to the general feedback section, all the scores for the test change. You have to go back to the Main Menu to retrive the original scores for the test.3. When re-taking the same test for a second time, the whole program locked and I could not verify my answers.