Abstract:

The purpose of the study is to develop an instrument in order to determine the high school students’ financial literacy level. 729 high school students participated in the validity and reliability studies. Financial literacy scale has three sections. Two of these sections are Money Management Selfefficacy and Money Management Behaviours. These sections are likert –scaled instruments and exploratory and confirmatory factor analysis was applied for them. Also item discriminations were tested and Cronbach Alpha reliability of scales were calculated. The other section of instrument is Financial Knowledge Test which is consisting of 33 true/false type items. For this section item discriminations and item difficulties were tested and determined the reliability of KuderRichardson 20 (KR-20) consistency coefficient were calculated. Both Money Management Selfefficacy and Money Management Behaviours sections are composed of 10 items and two factors. Cronbach internal consistency coefficient of the Money Management Self-efficacy was found to be .85 and Money Management Behaviours was found to be .81. KR-20 of the Financial Knowledge was found to be .83.