This report describes the observer's manual and the corresponding trainer's manual for the classroom observation instrument which was designed to code the behavior of students during reading instruction. The "Reading: Student Observation Scale" has been designed to be used with a corresponding observation instrument which focuses on the behavior of the teacher. As originally designed, the Student Observation Scale can either be used by itself or it can be used concurrently with the Teacher Observation Scale by having a pair of trained observers observe at the same time in each classroom such that one observer codes the teacher's behavior in ten-second intervals while the other observer codes the behavior of a different student every fifteen seconds. The time intervals for these two observation instruments are different because the pilot tests of the instruments indicated that it was too difficult to do reliability studies of student observations in classrooms within any shorter time-interval. The manual which was used by the observers during the training program appears in Part I of this report. The trainer's manual which was used during the training program appears in Part II of this report; the trainer's manual contains additional practice exercises and a detailed training schedule. The formal training program for the observers also included audio-tapes and colored slides which simulated scripts of teacher-student interactions. (Author/RC)