The A2i Assessments Technical Manual
Table of Contents A2i Overview ............................................................................................ 3 Assessment Background ....................................................................... 4 A2i Online Assessments ................................................................................ 4 Use ............................................................................................................... 4 Rationale ....................................................................................................... 5 The Importance of a Computer Adaptive Approach to Assessment ................. 7 Description of the Assessments .......................................................... 8 Letters2Meaning (L2M) .................................................................................. 8 Duration ................................................................................................... 8 Items ........................................................................................................ 8 Item Types ................................................................................................ 9 Word Match Game (WMG) ............................................................................ 11 Duration .................................................................................................. 11 Item Types ............................................................................................... 11
A2i Assessment Score Types.......................................................................................12
Reporting on Reliability & Validity .................................................... 16 Reliability ..................................................................................................... 16 Internal Consistency Reliability . ............................................................... 16 Test-Retest Reliability ............................................................................... 17 Validity ......................................................................................................... 17 Content Validity ....................................................................................... 17 Concurrent Validity .................................................................................. 18 Construct Validity .................................................................................... 19 Predictive Validity . ................................................................................... 19 A2i Assessment Data Displays ........................................................... 20 Assessment Implementation Details ................................................ 23 Assessment Best Practices for Teachers . ..................................................... 23 Technology Requirements . .......................................................................... 24
References .............................................................................................. 25
Scholastic.com/A2i
Page 2
Made with FlippingBook - Online catalogs