According to Missy McNatt, one of our Educators at the National Archives at Washington D.C. .....
Most school groups reserve a timed entry because tours are only offered for groups of up to 15 and are only given once at day at. The link for reserving a timed entry or a tour is -
We always love to have groups visit the ReSource Room in the Boeing Learning Center. If the group has the time (2 hours) and 36 or fewer students, we have the Constitution-in-Action Learning Lab.
You don’t have to book a tour to visit the National Archives with your students; but you can book a timed visit entry or reserve a guided tour (for up to 15 people, at 9:45 a.m. Monday–Friday only). Visit http://www.archives.gov/museum/visit/reserved-visits.html for information.
In our museum, you can explore our exhibitions, including viewing the original Declaration of Independence, the Constitution, and the Bill of Rights. You can also visit our “Public Vaults,” which showcases the breadth and variety of the holdings of the National Archives, and is organized thematically around the Preamble of the Constitution. Or see a temporary exhibit in our Lawrence F. O'Brien gallery. Find exhibit information at http://www.archives.gov/museum/visit/
Drop in to our ReSource Room in the Boeing Learning Center during your museum visit to participate in hands-on activities and programs based on documents, images, maps, posters and more. We're open Monday–Saturday, 10 a.m.–4 p.m., and reservations are not required. For school groups, we ask that you rotate through in small groups of 10 students at a time, with at least one chaperone per group. You can also check for special activities and programs on our events calendar: http://www.archives.gov/dc-metro/events/
If you’re interested in an even more immersive experience, you can book a reservation for your class in our Learning Lab in the Boeing Learning Center. Your students can participate in one of our document-based learning lab programs. We offer “The Constitution in Action” — that explores how the actions of the Federal Government are based in our Constitution, and “The Civil War: Celebrate or Commemorate?” — that features primary source documents focusing on different aspects of the Civil War. Working in replica storage and research spaces, students will find, select and analyze primary sources, then make connections to bigger ideas about our government and history. Learn more and make a reservation at http://www.archives.gov/education/student-visits/dc-lab.html