@PhilipDAth and @Ben Thank you both for your ideas. I figured out a way to make it much simpler to determine the iPads for each school. As I had the serial numbers for each school, all I needed to do is unenroll the iPads in Apple School Manager and re-enroll them.
Once I did that it cleared the settings from the batch of iPads so I could easily identify each schools iPads so that I could move them to the correct school and add my tags for the school.
I'd still love to know how to do it through the API but this has definitely made sorting the iPads out to their correct schools go much faster.
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