An IERI – International Educational Research Institute Journal
Table 1 Classification of PISA and TIMSS grade 8 items using the F/NF dichotomy, in percentages of items
PISA math 2012 (%) | TIMSS grade 8 math 2011 (%) | |
|---|---|---|
Classified as F [using formula(s)] by at least 5 of 6 scorers | 18.8 | 21.7 |
Opinions divided (4-2 or 3-3) | 9.4 | 13.4 |
Classified as NF [not using formula(s)] by at least 5 of 6 scorers | 71.8 | 65.0 |