Proficiency is what you can DO with the language. We structure our lessons around "I can" statements, for example: "I can exchange information about what I like to do in my free time". Proficiency is organized by levels. This little graphic shows you some of this:
In order to "meet expectations" you will have achieved the Novice Mid level by the end of 6th grade. In order to "meet expectations" you will have achieved the Novice High level by the end of 7th grade. In order to "meet expectations" you will have achieved the Intermediate Low level by the end of 8th grade.