In situations like these the exam must be fitted to the covered topics. If its well recorded that teacher didn't cover and go through classes then it should be already part of risk management solutions. (You're not the first or last to have a teacher who cannot complete the syllabus due to student, school or personal issues like sickness or death) in those cases there should be a guidance how to deal with it. Now because you said it's a classroom behaviour issue, then why on earth did you check syllabus TWO days before the exam, sounds like the minute classes got cancelled you could have been Proactive and chase the syllabus, and teacher or Google the two topics not covered. Use Google scholar for in-depth knowledge. I have no idea what has happened to students that you're not able.to do search information without a teacher. I dropped out at 12, moved out, and yet I graduated and went into stem programmes in schools. I hated teachers and classrooms, even in college so I made sure I had the books, library, internet access to study on my own. Nobody is at fault, only you! Especially since the rest of the class didn't care, I'm shocked you didn't ask help sooner, way sooner. 2 days before exam, no teacher would cover.two brand new topics just before exam. So something doesn't add up in your story. I feel sorry for the teacher, imagine what had to happen that you decline a class full of students. Soon we will have everyone dealing with human services declining to deal with humans.