Comparing U.S. state-level math trends on TIMSS and Main NAEP, 8th-graders

1995/1996 1999/2000 2011 Average annual change
Connecticut
TIMSS 512 518 +0.1%
Main NAEP 281 287 +0.2%
Massachusetts
TIMSS 513 561 +0.7%
Main NAEP* 279 299 +0.6%
Minnesota
TIMSS 518 545 +0.3%
Main NAEP 284 295 +0.3%
North Carolina
TIMSS 495 537 +0.7%
Main NAEP 276 286 +0.3%
Indiana
TIMSS 515 522 +0.1%
Main NAEP 281 285 +0.1%
Missouri
TIMSS 505 490 -0.8%
Main NAEP 273 274 0.0%
Oregon
TIMSS 525 514 -0.5%
Main NAEP 276 281 +0.4%

* The Minnesota 1996 Main NAEP test was administered without accommodations permitted, and the 2011 test was administered with accommodations permitted, so these test results are not strictly comparable.

Source: Harmon et al. (1997); Mullis et al. (1998); Mullis et al. (2001); Mullis et al. (2012); National Center for Education Statistics' NAEP Data Explorer

View the underlying data on epi.org.