This brief list suggests some poems that I feel lend themselves to my suggestions for developing student writing skills.  They are especially suitable to narrative writing.  There are many, many more that are appropriate.
"Santa and the Reindeer"  (
Where the Sidewalk Ends
, p. 90-91.)
One of Santa's reindeer refuses to move until Santa realizes that even he, the reindeer, needs to be recognized with a small gift.
"Peanut-Butter Sandwich"  (
Where the Sidewalk Ends
, p. 84-86.)
A young king's obsession with peanut butter sandwiches causes a major problem in the royal court.
"Spoiled Brat"  (
Falling Up
, p. 89.)
After a series of outrageous misbehaviors, the spoiled brat is accidentally cooked for dinner.  Despite the excellent seasoning, she was too 'spoiled' to eat.
"Pinocchio"  (
Falling Up
, p. 89.)
This poem takes a rhyming look at the tale of Pinocchio.
"Clarence"  (
A Light in the Attic
, p. 154.)
Clarence buys everything he sees advertised on TV. Including a brand-new Maw and Paw.  Though the purchase is a success for Clarence, teachers may delve into the pros and cons of such a decision.
"Sick"  (
Where the Sidewalk Ends
, p. 58-59.)
Peggy Ann McKay seems to have a million reasons why she is too ill to go to school, until she realizes that it's Saturday.