This paper analyses the associations between computer use in schools and at home and test scores by using TIMSS data covering over 900,000 children in fourth grade. When controlling for school fixed effects, pupils who use computers at school, especially those who use them frequently are found to achieve less than students who never use computers. Daily computer use at home is negatively associated with test scores, although monthly, and sometimes weekly, use is positively associated with pupil performance. There is no significant difference between subjects and only small gender and country differences are observed. Moreover, the result suggests that the negative association of computer use at school is larger among low-performing pupils than for high-performing pupils. The findings suggest a negative association of computer use at school and test scores but do not reject the possibility that computers have a positive impact on test scores if computers are used optimally.

The purpose of this paper is to study whether Swedish admission policies successful in selecting the best-performing students. The Swedish universities select students based on two different instruments, which each form a separate admission group. A regression model is recommended to estimate the achievement differences for the marginally accepted students between the admission groups and is applied to a sample of 9024 Swedish university entrants in four different fields of education. Marginally accepted students in the group selected by school grades on average perform better than students accepted by an admission test, suggesting that a small reallocation of study positions towards the grade admission group may increase overall academic achievement. However, the achievement difference appears to vary concerning university programme selectivity. We found that increasing selection by grades in less competitive programmes would improve overall achievement, while we do not find any effect for highly competitive programmes.