The claim is Of all of the teachers at AGL, Mr. Thayer has proven to be the best at teaching students how to support a claim. The New York City Department of Education has developed an assessment in order to gauge the effectiveness of teachers within their schools on how well they teach students argumentative writing. The rating is out of a scale of 5, with 5 being the best and 1 being the worst. The average score of all staff members at AGL was 3.24. The average across the Department of Education was 2.17. However, Mr. Thayer, a Global History teacher at AGL, scored a 4.78, making him the highest scoring teacher at AGL and within the top .08% of the entire city. what is the evidence that is the claim