An IERI – International Educational Research Institute Journal
From: Linking the first- and second-phase IEA studies on mathematics and science
 | Four-country-all-time | First-second-time | ||||
---|---|---|---|---|---|---|
FIMS | SIMS | T95 | T99 | T03 | T95 | |
Bridge items | 9 | 17 | 17 | 11 | 7 | 17 |
Countries | 4 | 4 | 4 | 4 | 4 | 42 |
Sample size | 2000 | 2000 | 2000 | 2000 | 2000 | 21,000 |
Responses | 18,000 | 34,000 | 34,000 | 22,000 | 14,000 | Â |
Total responses | 122,000 | 357,000 |