There are many challenges that confront educators and practitioners faced with helping struggling readers improve their understanding of texts. These challenges stem directly from the multifaceted and variable nature of comprehension. Comprehension is often quite variable, because it is influenced by reader abilities, engagement, text and task factors, and the context in which the reading event is occurring. This means that even good students will show differences in comprehension performance depending on subject content and the nature of texts (cf. Kamhi, in press).