Science, Technology, Engineering and Mathematics (STEM) professionals are responsible for the development of new technologies and breaking scientific discoveries. However, in the United States, racial minorities and females are vastly underrepresented in STEM professions. This problem is multiplied for individuals falling into both categories. Educators in must develop effective strategies to increase the number of minority females in STEM jobs. The purpose of this quantitative study was to investigate if there was a difference in attitudes about future STEM educational choices and career opportunities after participation in a theme-based STEM event. The significant points reflected in the literature are statistics that demonstrate the extreme underrepresentation of this population and the importance of having all segments of the population represented in these important jobs. A descriptive non-experimental design study utilizing survey data taken before and after a STEM day at a public school was employed. The analysis tool was the Hopes and Goals Survey which has been found valid and reliable with similar samples of students. The data sets were pre-event and post-event surveys from minority females in grades 3, 4, and 5. The two data sets were compared using descriptive statistics to investigate any differences in opinions before and after the event. The results showed a difference in minority female student's attitudes regarding future STEM educational opportunities and careers after participation in a theme-based STEM event. The results indicate a need for increasing the number of STEM events in public schools. Future research may explore the differences between the opinion changes of males versus females to ascertain which gender responded most positively to STEM day. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://www.proquest.com/en-US/products/dissertations/individuals.shtml.]