How I Use It
I mostly work with staff on PD, so I use it during a mid-day check in to give them an opportunity to offer feedback, but also to review main concepts that we've covered during the training. I can check the results and spend time clarifying if needed. The drawbacks I see to this is that I can't see an immediate open-ended answer for students without ending the quiz and having the program email me the results in spreadsheet format. So it takes a few minutes to really be able to review what students have submitted. Also, this is mostly text based, so non-readers or non-writers would not be able to use it very fully.
Create quizzes and administer them to students on any type of web-enabled device. As a teacher, you can see the score of the quiz and can download a spreadsheet with item by item details. To use this to guide instruction in the classroom, consider making short quizzes on single concepts so that you can see by the overall score on a quiz whether you need to spend more time or reteach. Teacher uses teacher version, students use student version and log in your the teacher's assigned "class PIN." Supporting blog has ideas for creative application. If you don't have clickers available, but would like to use the concept in the classroom and have enough devices or can allow students to use cell phones, this might be worth taking a look at!