A handy tool for educators, this dictionary on the ASCD website contains an alphabetical list of words/phrases that will tell you "What Educators Mean When They Say... "
The focus seems to be on school (K-12) education. Unfortunately, the list is US centric with terms like "Brown v. Board of Education", "California Achievement Tests", "Channel 1", and " church-state separation". I think about 30% of the words/phrases are not of relevance to educators outside of the US.
A handy reference nonetheless.