Terms of the ELS

Domain: The ELS assesses 3 domains in all. This shows the Math & Science domain.
Item: Each domain has several items; the ELS assesses 10 items total.
The Math & Science domain has 4 items.
This example shows Item #1: Number and Numerical Operations.
Strand: Each item contains 1-4 strands.
This item has 3 strands: Functional Counting, Numerical Operations and Written Numbers.
Indicators: Each strand describes observable indicators along a developmental trajectory for levels 1, 3, and 5.