Personally I go for something else. A poem they might not be familiar with so they're all on an equal footing. Also top set need challenging stuff that gives them opportunity for independent thought/creativity... Something like Ted Hughes 'wind' would offer opportunity for close analysis of challenging imagery but also allows for deeper readings e.g. natural world as violent/ aggressive or the weather as symptomatic of poet's feelings. For something really fun though, (nicked from Cliff Yates brilliant 'Jumpstart poetry in the secondary school classroom'), use Sylvia Plath's 'Mushrooms' - could explore impression of mushrooms then they could write their own parody poem, imagining another inanimate object/ plant/ insects invading e.g. lettuce, books, odd socks. You could do a scaffold just in case, but idea is to get them mirroring the ominous tone and the short, creeping lines. Better student should be encouraged to match their sounds/ line length to their object. Other poems worth a look which could do any by using a creative task/ crunching some of the poem and using words to write their own, with a reveal and comparison of the original at the end/ allocating groups a different focus: DH Lawrence's 'Bats' - lovely imagery/ technique Gerald Manley Hopkins - 'God's Grandeur' (tricky but decent!) Carol Ann Duffy - Mrs Haversham or one of the world's wife edited. could focus on speaker's voice/ creation of character Hope that helps - good luck!