ITBS mathematics is heavily weighted toward computation while ISAT contains up to three times as many items on algebra, geometry, measurement, and probability and statistics¶

Claim · All claims
Evidence · 1 study · associational r1 · q2
Currency · newest study 2003 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q2 i? Content classification of the two mathematics tests shows ITBS emphasizing computation and ISAT emphasizing algebra, geometry, measurement, and probability and statistics. → Easton 2003

Evidence¶

Easton 2003¶

Easton, J. Q., Correa, M., Luppescu, S., Park, H.-S., Ponisciak, S., Rosenkranz, T., & Sporte, S. (2003). How Do They Compare? ITBS and ISAT Reading and Mathematics in the Chicago Public Schools, 1999 to 2002. Consortium on Chicago School Research. https://www.consortium-chicago.org/publications/briefs/onlineresources.html

q2 · i? · associational · r1

Documentary comparison of the content/process classifications of items on the two mathematics tests (Table 3), qualified by the authors' note that ISAT double-counts items across areas, making strict comparison difficult. The article reports "the ITBS is much more heavily weighted toward computation."

"This difficulty aside, it is clear that the ITBS is much more heavily weighted toward computation, and that the ISAT contains up to three times as many items on algebra, geometry, measurement, and probability and statistics."

Discussion¶

Related Claims¶

• In fifth-grade mathematics, ITBS scores declined while ISAT scores rose, a statistically significant difference in opposing trends — related
• One-to-one correspondence between ITBS national quartiles and ISAT performance categories breaks down at the first and fourth quartiles — related
• ITBS and ISAT scores are highly correlated among CPS students in reading (r = 0.83 to 0.85) and mathematics (r = 0.86 to 0.87) — related
• ITBS and ISAT inclusion rules differ: ISAT reports scores for all test-takers, while about 20 percent of ITBS test-takers are excluded from public reporting — related
• In fifth-grade reading, ITBS scores declined significantly more than ISAT scores from 1999 to 2002 — related
• State tests under NCLB measured little higher-order thinking, with only 2 percent of math items qualifying — related
• No classification method was significantly superior for predicting mathematics achievement — related