No, I'm thinking more in the range of 4-6-year-old kids...and on up to teens...and on up to adults...what can I say, "I have ambitions."
Look at 'Twas the Night Before Christmas...what's the age range for that? 'Twas the Night is 540 words...and as far as poems go, it is a bit wordy - for the most part 12-syllable lines, +/-....Rudolph lyrics are a mere 111 words...and the original Rudolph story by Robert L. May is approximately 1400 words...but if you read the story and then the lyric, the lyric is a very tight compression of the story....hmm, now that I'm looking at the "story," it's actually written in rhyming couplets...very interesting (to me at least)...it's seems to be actually an 90-stanza poem (on a rough count) consisting of rhyming couplets...mine is only 20 stanzas...I'm not sure I need to write 70 more stanzas though!?
**If I might add** I don't think we poets get enough credit - 'Twas the Night Before Christmas is a poem...and so apparently is the original Rudolph "story." Looks like poems have been central to Christmas-as-we-know-it in the US.