Quick Key is an excellent free iOS app that allows educators to scan a paper test/quiz and then has the app do the grading. The way this works is by snapping a pic of the quiz/test/survey (up to 30 questions long) and then app does the grading/assessment right on the mobile device. It can then be exported into any electronic grade book and a teacher can track student/classes as well.
I highly recommend checking out Quick Key by clicking here!!!
For my Pinterest board on Educational iOS Apps click here.