I was wrong. I thought there would be no feedback, but the student who got a PERFECT score of 30 on the writing wrote a long and VERY helpful feedback to give you some tips.
I am very grateful and wish to thank this student. She gave tips on many of the same questions you brought up in class, especially regarding grading!!!
Thank you very much!!!
Tips: http://www.ptt.cc/bbs/TOEFL_iBT/M.1347714001.A.78B.html