Each of the senseis has a 20-point scorecard , of which only 1 point is devoted to " accurate technique . " Everything else is presentation : engaging the audience 's attention , making sure everyone can see and understand what you 're doing , selling the impact of the technique , etc . 17 is a passing grade . LJ 's own Katie H. did very well , at least on my scorecard .

Question: Why did they use a scorecard ?
Answer: None of the above choices .They put the grades for the presentations on it .Their presentation is written down on the scorecard .They are using it to help them during their presentations .