Informativeness of Informativeness of TIMSS Science TestTIMSS Science Test

(should we go for the evidences or for the training)

Srdjan Verbić Institute for Education Quality and EvaluationFabrisova 10, 11000 Belgrade, Serbia

e-mail: sverbic @ ceo.edu.rs

19th Jan. 2010 @ Sarajevo

Gathering the evidences

very rich TIMSS treevery rich TIMSS tree

an English gathereran English gatherer

Japanese or Korean, I’m not sure

Japanese or Korean, I’m not sure

someone of ussomeone of us

low int. benchmark

moderate int. benchmark

high int. benchmark

advanced int. benchmark

19%

30%

35%

14%

2%

Percentage of population between benchmarks is given for Serbia. It is not

much different for any other Balkan country.

Percentage of population between benchmarks is given for Serbia. It is not

much different for any other Balkan country. Test-item distribution

IRT and Fisher information

TIMSS results are analyzed and TIMSS results are analyzed and calibrated using 3PL IRT modelcalibrated using 3PL IRT model

All parameters are determined All parameters are determined and published in Technical and published in Technical ReportReport

Therefore we can calculate Fisher Therefore we can calculate Fisher information function (information function (II) across ) across the scale (the scale (θθ))

Does it fit population profile in your country?

How much we get for what we pay

What we can do?

A quit the study quietlyB get mad and refuse to payC learn and take more active roleD ignore the problem and have fun

You can send your answers by e-mail to sverbic @ ceo.edu.rs