In specialization, the best teachers teach one or two priority subjects, leaving other subjects and many noninstructional tasks to teammates. A likely combination would be subject pairs: 1) math/science and 2) language arts/social studies.
As Opportunity Culture implementation has grown throughout the country, we continually revise and update our models based on the experiences and data from Opportunity Culture schools. We recommend using specialization in combination with Multi-Classroom Leadership. See our current model recommendations here.