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 Louisiana Star Reading Enterprise and Star Math Enterprise schools, we linked our scaled scores with the scaled scores from Louisiana's achievement test. This technical report details the statistical method behind the process of linking Louisiana's state test (LEAP 2025) and Star Reading and Star Math scaled scores. The full report is available online: <https://docs.renaissance.com/R44666>.

DETAILS: Location: KY, AZ, CA, MS, SC, AR, CO, NV, NM, LA, AL, WV, and TN; Design: Independent, correlational; Sample: 140 local model literacy initiative programs; Measure: Star Reading, Star Early Literacy; Duration: 1 school year. RESULTS: During the 2010-11 school year, Save the Children supported several local programs in its model literacy initiative. Services at the 140 sites included the delivery of integrated in-school and afterschool literacy activities for children including using Accelerated Reader. This report describes implementation of the literacy model at each site, the characteristics of participating children, and the learning results achieved during 2010-11. During the 2010-11 school year, the proportion of participants reading at a level appropriate for their grade level or above increased. On the initial Star Reading test, 12% of students were at grade level or higher--a normal curve equivalent (NCE) score of 50 or more. The final Star Reading test showed that 29% were reading at grade level. The average pre-post change in Star Reading scores was 8.2 NCEs, which was statistically significant. AUTHORS: Richard N. White, Andrea S. Palmiter, Beth Sinclair, and Elizabeth R. Reisner. Report available online: <https://docs.renaissance.com/R61745>

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: KY, AZ, CA, MS, SC, AR, CO, GA, NV, NM, LA, AL, and TN; Design: Independent, correlational; Sample: 122 local model literacy initiative programs; Measure: Star Reading, Star Early Literacy; Duration: 1 school year. RESULTS: During the 2009-10 school year, Save the Children supported several local programs in its model literacy initiative. Eighty-four of the 122 sites continued to offer literacy programming begun in 2003-04 through 2006-07, 24 during 2008-09, and 14 sites operated for the first time in 2009-10. Services at the 122 sites included the delivery of integrated in-school and afterschool literacy activities for children including using Accelerated Reader. This report describes implementation of the literacy model at each site, the characteristics of participating children, and the learning results achieved during 2009-10. During the 2009-10 school year, the proportion of participants reading at a level appropriate for their grade level or above increased. On the initial Star Reading test, 16% of students were at grade level or higher--a normal curve equivalent (NCE) score of 50 or more. The final Star Reading test showed that 29% were reading at grade level. The average pre-post change in Star Reading scores was 7.4 NCEs, which was statistically significant. AUTHORS: Richard N. White, Elizabeth A. White, Andrea S. Palmiter, and Elizabeth R. Reisner. Report available online: <https://docs.renaissance.com/R53347>

DETAILS: Location: KY, AZ, CA, MS, SC, AR, CO, GA, NV, NM, LA, and TN; Design: Independent, correlational; Sample: 118 local model literacy initiative programs; Measure: Star Reading, Star Early Literacy; Duration: 1 school year. RESULTS: During the 2008-09 school year, Save the Children supported several local programs in its model literacy initiative. Twenty of the 118 sites continued to offer literacy programming begun in 2003-04 or 2004-05, fifty-one began operating during 2005-2006 or 2006-07, 19 during 2007-08, and 26 sites operated for the first time in 2008-09. Services at the 118 sites included the delivery of integrated in-school and afterschool literacy activities for children including using Accelerated Reader. This report describes implementation of the literacy model at each site, the characteristics of participating children, and the learning results achieved during 2008-09. During the 2008-09 school year, the proportion of participants reading at a level appropriate for their grade level or above increased. On the initial Star Reading test, 16% of students were at grade level or higher--a normal curve equivalent (NCE) score of 50 or more. The final Star Reading test showed that 29% were reading at grade level. The average pre-post change in Star Reading scores was 5.8 NCEs, which was statistically significant. AUTHORS: Andrea S. Palmiter, Erickson R. Arcaira, Richard N. White, and Elizabeth R. Reisner. Report available online: <https://files.eric.ed.gov/fulltext/ED508135.pdf>

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: New York, NY; Denver, CO; and Monroe, LA Design: Independent, correlational; Sample: 10,617 students in grades 1-12 at 43 schools; Measures: Star Reading, Colorado Student Assessment Program (CSAP), Louisiana Educational Assessment Program (LEAP); Duration: 1 school year. RESULTS: The Carmel Hill Fund Education Program uses Accelerated Reader as its primary means to help schools improve. A collaboration between The Carmel Hill Fund and Renaissance's Research Department, this report examines the impact of Accelerated Reader on student achievement and teacher and principal opinions during the 2005-2006 academic year. Findings were confirmed by an independent, external statistician. Overall, data from Accelerated Reader, Star Reading, the CSAP, the LEAP, and educator surveys indicated that Carmel Hill is successfully helping disadvantaged schools improve student reading performance. Report available online: <https://docs.renaissance.com/R38852>

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.