The problem of this study was to determine whether Method A is a more efficient observational method for obtaining activity type behaviors in an individualized classroom than Method B. Method A requires the observer to record the activities of the entire class at given intervals while Method B requires only the activities of selected individuals to be recorded. The overall plan consisted of collecting a cumulative every 30-second 20-day cumulative criterion to which each method was compared to determine which of the two was more efficient. It was found that the minimum number of observer hours required to reach an acceptable level was less for Method B than Method A. Therefore, it was concluded that Method B is a more efficient observational method for obtaining activity type observations in an individualized classroom than Method A. (Author)