One of the major hurdles in starting a research career is the lack of related experience or opportunities offered in high schools.
A full-time, free research experience in the sciences or engineering for high school students. Students are included in ongoing research programs where they are closely supervised by Princeton faculty and research staff. The participation dates are customized according to the schedules of the research personnel and intern and the specifics of the project. Internships typically span 5-6 weeks over the summer.
See https://research.princeton.edu/about-us/internships/laboratory-learning-program