Reading Metrics
Grade Level
Middle Grades (MG 4-8)
Book Level
4.6
Points
0.5
Fiction/Nonfiction
Nonfiction
Word Count
2159
Points per Word
0.000232
Page Count
24
Points per Page
0.020833
Series
Highly Guarded Places
Description
Learn the ins-and-outs of the giant underground vault located beneath one of the most famous buildings in the United States.