15. A computer-implemented method comprising: for each of a set of electronic user devices, and, via execution of an educational application on an electronic instructor device: receiving a wireless communication, from the electronic user device that includes an identifier of a response submitted to an educational question; automatically detecting, using one or more processors, a time at which the wireless communication was received; calculating, using the one or more processors, a response time based on the time at which the wireless communication was received and a time at which the educational question was availed, the educational question having been availed at a same time with respect to each electronic user device of the set of electronic user devices; and generating response data that include the identifier of the response, the response time and an identifier of a user in the set of electronic user devices; and automatically displaying a representation of a response-time statistic determined based on response times corresponding to a subset of the set of electronic user devices, a same response having been identified in the wireless communication received from each electronic user device in the subset.
18. The computer-implemented method as recited in claim 15 , wherein the representation further indicates a quantity of responses represented in the subset.