Isn't Wordsworth a great bet too? Especially since there generally has to be an "esteemed" poet on the paper. Plus he hasn't ever appeared on the paper in spite of it being his third time on the syllabus.
there's a teacher in my school who done her thesis on why the leaving cert poetry questions are too predictable, and she has never predicted wrong. Her class have studied Adrienne Rich and Dickinson so far.