Appendix B Comparison of Assessments that Measure Quality of Teacher-Child Interactions Assessment/ Ages Served and Primary Purpose and Reliability and Validity Measure Learning Environment Administration Classroom Two versions are Program Improvement/ Not normed. Reliability: High (.80 or higher). Concurrent Assessment available: pre- Evaluation validity: Low .50). Significant correlations were Scoring school classroom Observer must attend a found with other measures of classroom quality, but they System and a K-3 training session and were generally low, possible because this tool measures (CLASS) classroom pass a reliability test. different aspects of the classroom than other quality Cost is $600 per person measures. for training and $20 for Average inter-rater reliability reported in the Technical manual Appendix is 87%. Stability across time is uniformly high with 2 hours to administer almost all correlations above .90. Results from multi-state study show classroom quality as assessed by CLASS is associated with children’s performance at the end of pre-school as well as gains in in their performance across the preschool year. Early Early childhood Program Improvement, Basic field test for reliability. Ongoing testing of Childhood classrooms Monitoring/Accreditation, reliability and validity, using Item Response Theory. Environmental serving 2.5-5 year Research/Evaluation Rating Scale 3rd olds. New version Edition published in late (ECERS-3) 2014. Assessment/ Ages Served and Primary Purpose and Reliability and Validity Measure Learning Environment Administration
Appendix B Comparison of Assessments that Measure Quality of Teacher-Child Interactions Assessment/ Measure Ages Served and Learning Environment Primary Purpose and Administration Reliability and Validity Classroom Assessment Scoring System (CLASS) Two versions are available: pre- school classroom and a K-3 classroom Program Improvement/ Evaluation Observer must attend a training session and pass a reliability test. Cost is $600 per person for training and $20 for manual 2 hours to administer Not normed. Reliability: High (.80 or higher). Concurrent validity: Low .50). Significant correlations were found with other measures of classroom quality, but they were generally low, possible because this tool measures different aspects of the classroom than other quality measures. Average inter-rater reliability reported in the Technical Appendix is 87%. Stability across time is uniformly high with almost all correlations above .90. Results from multi-state study show classroom quality as assessed by CLASS is associated with children’s performance at the end of pre-school as well as gains in in their performance across the preschool year. Early Childhood Environmental Rating Scale 3rd Edition (ECERS-3) Early childhood classrooms serving 2.5-5 year olds. New version published in late 2014. Program Improvement, Monitoring/Accreditation, Research/Evaluation Basic field test for reliability. Ongoing testing of reliability and validity, using Item Response Theory. Assessment/ Measure Ages Served and Learning Environment Primary Purpose and Administration Reliability and Validity