From USAJOBS Help
STUDENT VOLUNTEER OPPORTUNITIES:
Federal agencies and departments offer unpaid training opportunities to students in high school and college. These opportunities can provide work experience related to your academic program, while allowing you to explore career options, as well as develop your personal and professional skills. As a student volunteer, exposure to the Federal work environment allows you to learn about the missions and responsibilities of various Federal agencies and departments.
You are eligible to participate as a Student Volunteer if you are enrolled, at least half-time, in:
Student volunteer work may be performed during the school year and/or during summer or school vacation periods. The nature of your volunteer assignment as well as your weekly work schedule should be part of your work agreement. Volunteer work assignments typically have duration of 3 â€“ 4 months.
How To Apply
If you are interested in becoming a student volunteer with the Federal Government:
Besides student volunteers, other volunteer opportunities are limited since Federal agencies are not allowed by law (section 1342 of title 31, United States Code) to accept volunteer service. The few exceptions are:
In addition, some Federal agencies, such as the National Park Service and the Forest Service, have specific authorities to accept unpaid services for specific jobs or functions. Individuals who are interested in volunteering their services to the Federal Government should contact the agency of most interest to inquire about specific opportunities.