Building Block 3 - The Outcome Space: The outcome space is the set of categorical outcomes into which student performances are categorized for all the items associated with a particular progress variable. In practice, these are presented as scoring guides for student responses to assessment tasks. This is the primary means by which the essential element of teacher professional judgment is implemented in the BAS. These are supplemented by ‘‘exemplars’’: examples of student work at every scoring level for every task and variable combination, and ‘‘blueprints,’’ which provide the teachers with a layout showing opportune times in the curriculum to assess the students on the different variables.