I tried something slightly different yesterday. I had the students complete a paper copy of their math quiz. After their quiz was completed, I allowed them to access a Google form that presented the math quiz in digital format. This format contained places to enter their answers.
I felt that with this group of students, having the iPad present while they completed the test was a distraction. Having all the focus on the assessment followed by students entering their answers digitally allowed for more concentration.
The process still allowed me to gather data so that I can see through numerous data sheets the level of understanding and direction for reteaching.