Abbreviated Interrupted Time-Series - Institute for Policy Research
Abbreviated Interrupted Time-Series - Institute for Policy Research
Abbreviated Interrupted Time-Series - Institute for Policy Research
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Basic Method of D & J<br />
• Prior studies can be used to determine which<br />
states did and did not have accountability system<br />
pre 2002<br />
• Dee & Jacob uses Hanushek’s measure<br />
• Main NAEP provides the pre‐intervention (2002)<br />
and post‐intervention time‐series <strong>for</strong> both<br />
reading and math<br />
• Hypothesis again is that NCLB should increase<br />
mean or slope or both after 2002 by more in<br />
states without a prior accountability system