If we define Output as the "end product", then the Output of teaching is the knowledge passed on to the student and the output of learning is knowledge gained. In both cases, models of education often require objectives to be known and Output to be measured.
Typically, Output for learning is measured by course grades and can be supplemented by standardized test scores, such as the SAT and ACT, or by mandated state-wide tests.
Output for teaching, however, could be considered subjective and varies amongst the different types of schools: primary, secondary (high school), and post-secondary (college). Many teachers are required to be evaluated annually by faculty and staff. And some schools track the test scores of teacher's students as an appropriate Output measure.