Accelerated Reader is a progress-monitoring system that provides feedback on the comprehension of books and other materials that students have read. It also tracks student reading over time. Currently, more than 180,000 different Accelerated Reader quizzes have been developed and are in use. This report provides reliability and validity data for Accelerated Reader quizzes. The reliability analyses use a large database of nearly 1 million quiz records. Validity is established through correlations with scores from 24 standardized reading tests and through a study that confirms that the quizzes are effective at discriminating between instances of students having read the book versus not having read the book. The report also includes descriptions of the purpose and intended classroom use of Accelerated Reader, descriptions of the types of quizzes, and the processes for quiz development. The report is available online: <https://docs.renaissance.com/R35806>.

To develop Pathway to Proficiency reports for Missouri Star Reading and Star Math cloud based schools, we linked our scaled scores with the scaled scores from the Missouri Assessment Program achievement test. This technical report details the statistical method behind the process of linking MAP and Star Reading and Star Math scaled scores. The full report is available online: <https://docs.renaissance.com/R45877>.

From the abstract: "Preschool experience plays a role in children's development. However, for programs with language and early literacy goals, the question remains whether or not preschool instructional experiences are sufficiently effective to achieve these goals for all children. In a multisite study, we conducted a process-product description of preschool instruction and children's growth and outcomes in typical programs (i.e., Pre-Kindergarten, Title 1, Head Start, Tuition-Based) using a Response to Intervention (RTI) perspective. Results indicated that (a) students in their preschool year prior to kindergarten made small gains, but students starting the year in lower Tier 2 and 3 performance levels did not close initial skills gaps, (b) variations were noted by program types with varying socio-demographics and instructional processes, and (c) the quality of instruction (Tier 1) received by all was low with room for improvement. Implications for future research on the application of the RTI approach and potential benefits are discussed."Citation: Greenwood, C. R., Carta, J. J., Atwater, J., Goldstein, H., Kaminski, R., & McConnell, S. R. (2012). Is a Response to Intervention (RTI) approach to preschool language and early literacy instruction needed? Topics in Early Childhood Special Education, 33, 48-64.The research study is available online: <https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4041200/>.

This study found that there was a strong correlation between Star Reading and third grade communications arts Missouri Assessment Program (MAP) scores (r=.695). CITATION: Moore, D. J. (2012). A case study of the analysis of factors that occur with reading proficiency in rural district in Southeast Missouri [Unpublished doctoral dissertation]. University of Missouri-Columbia.The full report is available online: <https://mospace.umsystem.edu/xmlui/bitstream/handle/10355/33091/Research.pdf>.The Summary of this study is available online: <https://docs.renaissance.com/R57666>

This study was conducted to determine whether students in need of intervention in algebra could be identified earlier, providing more time for them to receive additional support. Scores from Star Math (taken in grade 8) and the Algebra I End-of-Grade Exam (taken in grade 9) were examined for 200 students from a Midwestern suburban high school. A simple liner regression determined a student's Star Math score from eighth grade was a valid predictor of the student's Algebra I End-of-Course test taken the following year, making the assessment helpful in indentifying students in need of extra interventions.Citation: Smith, M. (2012). A study of the predictive validity of the Star Math test for the Algebra 1 End of Course exam. Maryville, MO: Northwest Missouri State University.The full report is available online: <https://www.nwmissouri.edu/library/researchpapers/2012/Smith,%20Molly.pdf>.

DETAILS: Location: 24 U.S. states; Design: Analysis of Reading Practice Database; Sample: 50,823 students in grades 1-12 at 139 schools; Measure: Star Reading; Duration: 1 school year. RESULTS: This study of Accelerated Reader indicated that increased time spent reading leads to gains in reading achievement for all students regardless of prior ability, but only when the reading is highly successful. Regression analysis revealed that the single most important factor influencing both time spent reading and average percent correct is a student's teacher. Students in 2nd- through 8th-grade Renaissance Model- and Master-certified classrooms consistently outperformed students in non-certified classrooms and low-implementing classrooms. Email research@renaissance.com to request a copy of the Full Report. Information about a newly updated version of the report is available online: <http://research.renaissance.com/research/474.asp>.

DETAILS: Location: 24 U.S. states; Design: Independent, correlational, peer-reviewed; Sample: 45,670 students in grades 1-12 at 139 schools; Measure: Star Reading; Duration: 1 school year. RESULTS: To explore whether different balances of fiction/nonfiction reading and challenge might help explain differences in reading achievement between genders, data on students who independently read more than 3 million books were analyzed. Moderate (rather than high or low) levels of challenge were positively associated with achievement gain, but nonfiction was generally more challenging than fiction. Nonfiction reading was negatively correlated with successful comprehension and reading achievement gain. Overall, boys appeared to read less than girls, but proportionately more nonfiction. In the upper grades, boys also had lower reading achievement than girls. Differences between classes in promoting successful comprehension of nonfiction were evident, suggesting intervention could improve achievement. Implications for research and practice were explored. PLEASE NOTE: Email research@renaissance.com to request a copy of this peer-reviewed journal article: Topping, K. J., Samuels, J., & Paul, T. (2008). Independent reading: The relationship of challenge, non-fiction and gender to achievement. British Educational Research Journal, 34(4), 505-524.

DETAILS: Location: 24 U.S. states; Design: Independent, correlational, peer-reviewed; Sample: 50,823 students in grades 1-12 at 139 schools; Measure: Star Reading; Duration: 1 school year. RESULTS: This study elaborated on the "what works?" question by exploring the effects of variability in program implementation quality on achievement. Particularly, the effects of computerized assessment in reading on achievement were investigated, analyzing data on students who read more than 3 million books. When minimum implementation quality criteria were met, the positive effect of computerized assessment was higher in the earlier grades and for lower achieving students. Implementation quality tended to decline at higher grade levels. With higher implementation quality, reading achievement gains were higher for students of all levels of achievement and across all grades, but especially in the upper grades. Very high gains and effect sizes were evident with very high implementation quality, particularly in grades 1-4. Implications for practice, the interpretation of research, and policy were noted. PLEASE NOTE: Email research@renaissance.com to rquest a copy of this peer-reviewed journal article: Topping, K. J., Samuels, J., & Paul, T. (2007). Computerized assessment of independent reading: Effects of implementation quality on achievement gain. School Effectiveness and School Improvement, 18(2), 191-208.

DETAILS: Location: 24 U.S. states; Design: Independent, correlational, peer-reviewed; Sample: 45,670 students in grades 1-12 at 139 schools Measure: Star Reading; Duration: 1 school year. RESULTS: Does reading practice make perfect? Or is reading achievement related to the quality of practice as well as the quantity? To answer these questions, data for students who read more than 3 million books were analyzed. Measures largely of quantity (engaged reading volume) and purely of quality (success in reading comprehension) showed a positive relationship with achievement gain at all levels of achievement. However, both high quantity and high quality in combination were necessary for high achievement gains, especially for older students. Both were weakly associated with student initial reading achievement, but more strongly associated with the class in which the student was enrolled, possibly suggesting the properties of teacher intervention in guiding independent reading were important. Implications for theory building, research, and practice were explored. PLEASE NOTE: Email research@renaissance.com to request a copy of this peer-reviewed journal article: Topping, K. J., Samuels, J., & Paul, T. (2007). Does practice make perfect? Independent reading quantity, quality and student achievement. Learning and Instruction, 17, 253-264.

DETAILS: Location: 24 U.S. states; Design: Independent, correlational; Sample: 50,823 students in grades 1-12 at 139 schools; Measure: Star Reading; Duration: 1 school year. RESULTS: This study is an independent evaluation of the data from Paul, 2003, available online: <http://research.renaissance.com/research/172.asp>. In the elementary grades, students in classrooms implementing Accelerated Reader with best practices showed statistically significant improvements in overall achievement level. In middle and high school, teachers who promoted a greater overall reading success rate were able to improve achievement results. Higher average percent correct on Accelerated Reader quizzes and reading at levels above the initial zone of proximal development (ZPD) were linked to greater outcomes. Additionally, even after using rigorous statistical controls for students' initial reading skill levels, reading success rate, and challenge of reading material, the amount of text read was a key predictor of later literacy development. AUTHORS: Geoffrey D. Borman, PhD and N. Maritza Dowling, PhD. The Summary of this study is available online: <https://docs.renaissance.com/R34537>. The Full Report is also available online: <https://docs.renaissance.com/R40524>.

DETAILS: Location: Throughout the US; Design: Independent, hierarchical linear modeling; Sample: Data from more than 3,000 classrooms using Accelerated Reader and best practices with 25 different reading curricula; Measures: Accelerated Reader, Star Reading. RESULTS: Results from an independent analysis demonstrates that when implemented according to Renaissance's recommended best classroom practices, Accelerated Reader enhances over 25 currently published reading curricula and leads to improved student outcomes. The more successful, guided independent reading students engage in, the higher their reading gains. AUTHOR: Daniel Bolt, PhD. A pdf of this report is not available. Email the Renaissance Research Department at research@renaissance.com for additional information.

DETAILS: Location: Throughout the US; Design: Independent, peer-reviewed; Sample: 659,214 students in grades K-12 at 2,193 schools; Measure: Accelerated Reader data. RESULTS: This study provided further evidence of the positive relationship between amount of reading practice and reading ability. In addition to gathering Accelerated Reader data for the study sample, 13,000 schools were also surveyed for the project, and the ethnicity and socioeconomic status of these students were found to be generally similar to U.S. students as a whole. Consistent with other research in the field, the study found that students in the highest quartile practiced reading 3.4 to 4.1 times more than students in the lowest quartile. In addition, the top 5% of readers read 144 times more than bottom 5%. The data also suggested that, on average, amount of reading practice increases until 6th grade and then declines. Finally, it was observed that schools using Accelerated Reader for 4 or more years had a 64% higher level of reading practice compared to schools using Accelerated Reader for 1 year. PLEASE NOTE: The Summary of this peer-reviewed journal article: Topping, K. J., & Paul, T. D. (1999). Computer-assisted assessment of practice at reading: A large scale survey using Accelerated Reader data. Reading and Writing Quarterly, 15(3), 213-231 is available online: <https://docs.renaissance.com/R33255>. For a copy of the Full Article, email the Renaissance Research Department: research@renaissance.com.

DETAILS: Design: Correlational; Sample: Data for 659,214 students in grades K-12. RESULTS: This study of reading is one of the largest ever conducted and collected reading performance data for 659,214 K-12 students. Key findings concluded students spend only seven minutes per day practicing reading, and reading practice declines markedly after 5th grade. The full report is available online: <https://docs.renaissance.com/R11830>.