How To Appeal A Regents Exam Grade

This info from NYCDOENUTS in a comment at Gotham Schools responding to somebody asking how a parent goes about appealing a Regents exam score:

Here's what I learned today:

As a parent, write (and print) a brief letter (or send an email) to the principal. It doesn't have to be anything big or long. Just include your child's name and identify the test (or tests) in question. Say that you are appealing the grade and would like the test to be re-scored.