Eighty-nine percent of the similarity scores are greater than 0.90, and the lowest is 0.80. These values indicate strong similarity between how two observers use each code. The lowest score for both the UBC and UMaine observers was for the instructor code “PQ: Posing nonclicker questions.” Comments from observers suggest that, when instructors were following up/giving feedback on clicker questions or activities, they often posed questions to the students. Observers checked the instructor code “FUp: Follow-up” to describe this behavior but stated they occasionally forgot to also select the instructor code “PQ.”