This document provides definitions for various data sheet codes used to record tutoring sessions. Codes include AAA for alternate activities, OT for when a child is off task, IP for implementation problems, IN for invalid data, OH for procedures placed on hold, PT for probe trials, SA for when a child is absent, SI for when a child is ill, and SL for when a child arrives late. Justifications must be provided for any codes and supervisors must initial coded sessions. Tutors should notify their TA if they have multiple instances of certain codes in a row or within a set number of sessions.