The purpose of this study was to determine if there are cross-national factors that account for students' computer know-how. The data used in the study were collected in the International Association for the Evaluation of Educational Achievement study on computers in education. In 1992, data were collected in seven different countries about the use of computers in elementary and secondary schools. A questionnaire was used to determine attitude scales, computer use at home, and scores on the Functional Information Technology Test (FITT) by students. Teachers were asked to indicate whether the subject matter covered in each item of the FITT was taught before the testing. The FITT consisted of 30 multiple choice items designed to measure the general practical knowledge and skills students will need to use information technology. Results showed that, in all countries, the average level of achievement differs across schools. Conclusions drawn from the analyses are that schools, student attitudes towards information technology, gender, and home background are meaningful factors in understanding differences in student achievement on functional information technology. (JLB)