The purpose of this study was to replicate previous findings indicating a moderate association between teacher perceptions of behavior as measured by direct behavior ratings (DBRs) and systematic direct observation (SDO) conducted by an external observer. In this study, data regarding student on-task and disruptive behavior were collected via SDO from trained external observers and via DBRs from classroom teachers. Data were collected across 15 teachers and three observation sessions, and the agreement between the two methods was compared as a way to examine concurrent validity. Results supported previous work suggesting that DBRs are significantly correlated with SDO data, ...