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Validating The Internal Structure Of The Performance Assessment Of California Teachers (Pact): A Multi-Dimensional Item Response Model Study, Brent Duckor, Katherine Castellano, Kip Tellez, Mark Wilson
Validating The Internal Structure Of The Performance Assessment Of California Teachers (Pact): A Multi-Dimensional Item Response Model Study, Brent Duckor, Katherine Castellano, Kip Tellez, Mark Wilson
Faculty Publications
Examining a large sample of teacher candidate responses (n=1711), we found a sufficient degree of internal structure validity evidence to support the intended, continued use of the Performance Assessment for California Teachers (2008) instrument to measure teacher candidates’ skills and proficiencies with professional standards in teaching (CCTC, 2012). Our examination of the Elementary Literacy Teaching Event found that the unidimensional IRT model fits the data very well and results in high reliability (.914), which is reassuring given the dependence on raters, the varied nature of the portfolio submissions and types of tasks, and the differences in California teacher preparation programs …