I dreamt I was back in college, flunked a course unit and had to retake that. However, a course-mate urged me to also attend all the course units, not just the one I flunked in order to "relive the great experience of college in its entirety".
I also had to look for a new place to live, and one of my teachers pointed me to here sister. Her sister lived in this hut where she kept and worshiped the decaying corpse of their mother. I got out of there and went to tell my teacher about it (who lived in a different place and looked strangely similar to one of my ex-colleagues). Then I woke up.
To dream of failure signifies fears of inadequacy and low self-esteem. You are not applying yourself to the fullest potential. Or you are overwhelmed with anxiety and the pressure to excel.
To dream that you are in school signifies feelings of inadequacy and childhood insecurities that have never been resolved. It may relate to anxieties about your performance and abilities. If you are still in school and dream about school, then the dream may just be a reflection of your daily life and has no special significance.
Alternatively, a dream that takes place in school may be a metaphor for the lessons that you are learning from your waking life. You may be going through a "spiritual learning" experience.
To see a corpse in your dream represents an aspect of yourself that has died. Or it may mean that you are unexpressive. You have shut yourself down and are dead inside.
My anus was being used to power a toaster... lol, wut?!