Dear tutor, please award lower marks to presentations where people read off palm cards or speak so you can't understand them. You giving them higher marks means you happened to put down those who could speak properly and memorised what they were going to say. Don't spout some crap about how the other groups answered their questions well etc, which they didn't do that much better at. You probably couldn't even understand them yourself. Also, please don't mark so harshly, or get the other tutors to mark more harshly. You seem to be pretty much the harshest marker there is in marketing. Other tutors gave 18s, even a 20! Your top mark was about 17.5, so says the marking sheet you have.