New York Rule???

[Thomas Neil Tomporowski <ttomporo@PERHAM.CFA.ORG>]

Friends

A library media friend down the road from me needs to find out what the New York
  Rule is.  It has something to do with computing grades and so is either a grad
 ing or math term.  She has made several phone calls and tried an ERIC search.
 Thought I would show her the power of our group.  Any answers out there?

Tom Tomporowski
Perham Public Schools
MN
ttomporo@perham.cfa.org