1887

Top of the Class

High Performers in Science in PISA 2006

image of Top of the Class

The rapidly growing demand for highly skilled workers has led to a global competition for talent. While basic competencies are important for the absorption of new technologies, high-level skills are critical for the creation of new knowledge, technologies and innovation. The OECD’s Programme for International Student Assessment (PISA) has taken an innovative approach to examining educational excellence, by directly assessing students’ knowledge, skills and attitudes and exploring how these relate to the characteristics of individual students, schools and education systems. Based on PISA survey results, this report examines who the highest performing students are, what the characteristics of the schools they attend are, to what extent they engage in science related activities outside of school, what their motivations and attitudes towards science are, and what their career intentions are.

English

.

Appendix B

Standard errors, significance tests and subgroup comparisons

The statistics in this report represent estimates of national performance based on samples of students rather than values that could be calculated if every student in every country had answered every question. Consequently, it is important to have measures of the degree of uncertainty of the estimates. In PISA, each estimate has an associated degree of uncertainty, which is expressed through a standard error. The use of confidence intervals provides a way to make inferences about the population means and proportions in a manner that reflects the uncertainty associated with the sample estimates. From an observed sample statistic it can, under the assumption of a normal distribution, be inferred that the corresponding population result would lie within the confidence interval in 95 out of 100 replications of the measurement on different samples drawn from the same population.

English

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error