Validity & Effectiveness Studies

ISIP™, istation’s Indicators of Progress, Early Reading Validity and Reliability Evidence for Pre-Kindergarten

 ISIP Validity and Reliability Research Report for PreK (201KB) March 15, 2010

During the 2009-10 school year, a study using ISIP, istation’s Indicators of Progress, Early Reading assessment program was conducted in eleven Pre-Kindergarten classes from a large north Texas school district. Data were examined for concurrent validity with external measures, as well as internal consistency and test-retest reliability. Results show large to very large evidence of reliability and validity with regards to letter knowledge, vocabulary, phonemic awareness, and comprehensive reading ability for students in Pre-Kindergarten.

ISIP™, istation's Indicators of Progress, Early Reading Reliability and Validity Evidence

 ISIP Early Reading Reliability and Validity Evidence (289KB) August 21, 2009

During the 2008‐09 school year, a validity and reliability study using ISIP, istation’s Indicators of Progress computer adaptive reading assessment program, was conducted in five elementary schools from a north Texas school district. Data were examined for internal consistency, test‐retest reliability, concurrent validity with external measures, including DIBELS, TPRI, AND ITBS, and predictive validity with TAKS. Results show moderate to strong evidence of reliability and validity with regards to phonemic awareness, alphabetic knowledge, vocabulary, and reading comprehension.

istation's Indicators of Progress (ISIP™) Concurrent and Predictive Validity Study

 ISIP Concurrent and Predictive Validity Study (291KB) April 16, 2007

In this study, concurrent validity information was gathered on ISIP: istation's Indicators of Progress kindergarten, first, second, and third grade benchmark assessments compared to Dynamic Indicators of Early Literacy Skill kindergarten, first, second, and third grade benchmark assessments (DIBELS, Good, Kaminski, & Dill, 2002). Further, predicative validity information was gathered on ISIP Third-grade benchmarks compared to Texas Assessment of Knowledge and Skills (TAKS) at third grade.

Validity & Effectiveness Studies are in PDF format. To read, please be sure to have Adobe® Reader® on your computer.

istation Research Program

Contact us if your school or district is interested in participating in an upcoming research program. These programs help us gather valuable feedback on new products early in their development cycle, as well as establish strong validity and reliability evidence for existing products.

Please e-mail istation's Research Department to be considered for an upcoming program. We will contact you if you are selected to participate.

Improving Reading Achievement of "At-Risk" Students

 Improving Reading Achievement of "At-Risk" Students 2005 – 2006 (413KB)

During SY 2005-2006, five school districts from across the country reported dramatic results after using istation Reading Program (formerly The Imagination Station) with students who were at risk of reading failure. Students made striking improvements in the five key research-based reading components: Phonemic Awareness, Phonics, Vocabulary, Fluency, and Comprehension.