There has been no research reported about if or how well primary grade teachers can identify information text structures in children's authentic informational texts. The ability to do so accurately and reliably is a prerequisite for teachers to be able to teach students how to recognize and use text structures to assist them in comprehending informational texts. The authors report the development of the Informational Text Structure Survey (ITS[superscript 2]). Prior to training, primary grade teachers demonstrated low accuracy and reliability in identifying traditional expository text structures in well-structured children's grade level-appropriate informational texts. Results after training with the ITS[superscript 2] instrument showed significant improvements in the teachers' accuracy and reliability in identifying traditional informational text structures in well-structured children's grade level-appropriate informational texts after training with the ITS[superscript 2] instrument.