An IERI – International Educational Research Institute Journal
Table 2 Overview of the composition of the samples in terms along with student achievement
(1) | (2) | (3) | (4) | (5) | (6) | (7) |
|---|---|---|---|---|---|---|
Study | Country | Grade (sample size per grade in parentheses) | Test month (sample size per month in parentheses) | Avg. age (in months) | Avg. reading (international scales) | Avg. reading (common IRT scale) |
1970 RCS | Hungary | Grade 4 (3423) | no data available | 127 | 14.0 | 471 |
Grade 5 (1396) | ||||||
Other (5) | ||||||
Italy | Grade 4 (159) | 127 | 19.9 | 537 | ||
Grade 5 (4220) | ||||||
Sweden | Other (6) | 125 | 21.5 | 536 | ||
Grade 3 (899) | ||||||
Grade 4 (1032) | ||||||
USA | Grade 3 (83) | 127 | 16.8 | 496 | ||
Grade 4 (1675) | ||||||
Grade 5 (3494) | ||||||
Other (17) | ||||||
1991 RLS | Hungary | Grade 3 (3009) | no data available | 112 | 459 | 445 |
Italy | Grade 4 (2221) | 118 | 500 | 490 | ||
Sweden | Grade 3 (4297) | 117 | 513 | 506 | ||
USA | Grade 4 (6433) | 120 | 521 | 514 | ||
2001 RLS | Hungary | Grade 3 (4707) | May (4707) | 116 | 475 | 465 |
Italy | Grade 4 (1590) | May (1557) Jun (33) | 118 | 513 | 503 | |
Sweden | Grade 3 (5361) | Apr (5361) | 118 | 498 | 471 | |
USA | Grade 4 (1826) | Apr (693) May (1130) | 120 | 511 | 506 | |
2001 PIRLS | Hungary | Grade 4 (4666) | May (4666) | 128 | 543 | 506 |
Italy | Grade 4 (3502) | May (3502) | 118 | 541 | 501 | |
Sweden | Grade 4 (6044) | Mar (6012) Apr (16) | 130 | 561 | 524 | |
Sweden | Grade 3 (5271) | Mar (5271) | 118 | 520 | 470 | |
USA | Grade 4 (3763) | Apr (1392) May (2371) | 123 | 542 | 502 | |
2006 PIRLS | Hungary | Grade 4 (4068) | Mar (33) Apr (4035) | 128 | 551 | 510 |
Italy | Grade 4 (3581) | Apr (3581) | 116 | 551 | 513 | |
Sweden | Grade 4 (4394) | Mar (61) | 130 | 549 | 509 | |
Apr (2765) | ||||||
May (1568) | ||||||
USA | Grade 4 (5190) | Jan (1504) | 121 | 540 | 499 | |
Feb (1620) | ||||||
Mar (758) | ||||||
Apr (483) | ||||||
May (684) | ||||||
Jun (140) |