Quoting:
It has to be a popular song from a movie and they'd like to replace the words with something that has to do with school.
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What's the school name?  If you can get that into the title it'll help (my father once wrote "The Ballet Schools of England" to the tune of "The Stately Homes of England" as a commission for a ballet school 'do')

Depends how adventurous you're feeling: there's a lot of G&S which works very well for parody - if you want to include lots of names "I've got a little list/They'd none of 'em be missed" is good (see here: http://math.boisestate.edu/GaS/mikado/html/none_be_missed.html)

If the names you have scan right, then "Doe, a deer" from Mary Poppins could work well.

You could always start with an existing school song (or, say, "Fight Fiercely Harvard" by Tom Lehrer)

Oh, so many possibilities ;-)

Phil

Quoting:
Thanks for that site.  I'll check that out.  The school's name is Western Coventry and it's grades k-6 so the song should be something popular that most kids would recognize.  
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...sort of (to the tune of "Tie me kangaroo down, sport"):

Chorus:
Western Coventry's great, kids
Western Coventry's great

...and have your verses as various simple teacher- or school- related couplets - as it's always repeated, you could get the children to join in, too.  And see how scurrilous you can get away with ;-)... say:

Mr Smith takes the pith, kids

...or

Jonesey's beard is weird, kids

(and hope that you don't have a Mr Tucker teaching at the school ;-))

Phil