WIDA's can-do descriptors

WIDA's can-do descriptors for grades 9-12

These descriptions of what an English language learner can do at various proficiency levels is fabulous, not least because describing capabilities rather than limitations is so useful.  It is broken down by the five levels of proficiency, and also the four categories of English--reading, writing, speaking, and listening.  It helps a teacher to figure out where a particular student might be, by giving the teacher concrete things to look out for.  It also gives a teacher an idea of how to differentiate an assignment to match what a student might be able to do.