School district locations in the ACS API

Hi all - 

API newbie question: How do I specify a school district as a location in an API call?

The following displays the ACS5 2020 table B14006 data for Flint Community Schools in the web interface: https://data.census.gov/cedsci/table?q=B14006&g=9700000US2614520

I assume I need &for=<something> but what is the syntax to specify a school district, and where can I find the districts' codes?

Thanks -

Jon