I have only taught in preschool and kindergarten classes and that was over 17 years ago so technology was just on the edge of greatness,Not to the point of being in every classroom.
The closest I can get to specific data used to make an instructional decision is perhaps my children chore chart. On the chore chart I would have chores scheduled, done, child's name, and chores still not done. I found the chore chart on the Internet, downloaded and printed it out. I did not need any additional data.
They looked a lot like these. In this instance the children were learning how to follow directions and how to complete a job.The specific data entered into the chart is what decided what child had more chores to do and what child I completed work and earn their reward.
I'm not quite sure what additional technology would've done to help. I use basic technology in the first place to get the chart which was downloading the chart off the Internet and printed it out. Possibly if it was a web application and each child could enter what chore they did online and it connected with my phone, that would be pretty cool.