This brief report summarizes the development and psychometric properties of German reading fluency passages as compared to English reading fluency passages for immersion language learners. Results indicated that scores from German language reading fluency passages alone were (a) somewhat less reliable than scores from English publisher-developed passages, (b) similarly valid measures of reading when compared to scores from English reading fluency passages, and (c) more accurate than publisher-provided English cut-scores but not as accurate as locally developed English cut-scores in the identification of at-risk readers.