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Large-scale Assessments in Education

An IERI – International Educational Research Institute Journal

Table 1 Summary of ARS mean scores

From: An item response theory approach to longitudinal analysis with application to summer setback in preschool language/literacy

Time

X ¯

SD

n

P Fall

2.09

0.81

916

P Spring

2.79

0.92

941

K Fall

2.40

0.92

827

K Spring

3.67

0.95

817

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