This coding manual was developed for the Texas Teacher Effectiveness Study and is intended to be self-contained. The coding system provides for extensive coding of student initiated questions and comments, opinion questions, and expanded private work contracts, both teacher initiated and student initiated, including extensive coding of quality and type of behavioral contacts. The focus for this system was on teacher behavior, since the larger research question involved the relative effectiveness of teacher process behaviors in producing student learning gains. However, the system can be readily adapted to account for individual student interaction with teachers by including a space for coding a student number. (Author/MV)