http://chronicle.com/article/To-Justify-Every-A-Some/128528/ Professors Cede Grading Power to Outsiders—Even Computers One college gives the job to software, while another employs independent `evaluators'
Also, here you can compare your grading vs. that of a computer for exam answers on Max Weber and Karl Marx.
http://chronicle.com/article/Can-Software-Make-the-Grade-/128505/