The Spy University series is a collection of 11 educational, hands-on activity books for young readers published by Scholastic in the early 2000's.
Co-authored by Jim Wiese and renowned intelligence historian H. Keith Melton, these books taught kids the mechanics of espionage through puzzles, experiments, and fact-based history.
The books in this series include:
* Spy University: Trainee Handbook 2002
* The Spy's Guide to Secret Codes and Ciphers 2002
* The Spy's Guide to Surveillance 2002
* The Spy's Guide to Undercover Communications 2002
* The Spymaster's Gadget Lab 2003
* The Spy's Guide to Scouting and Reconnaissance 2003
* Great Spy Stories of All Time 2004
* The Spy's Guide to Security 2003
* The Spy's Guide to Escape and Evasion 2003
* The spy's Guide to Disguise 2003
* The Spy's Guide to Counter-intelligence 2002


These books are primarily designed for middle-grade readers, focusing on observational skills, hidden writing, decoding ciphers, and the real-world gear used throughout the history of intelligence operations.