There are 4 books in the Protector of the Small series. The newest book is Lady Knight which came out in 2002.

1
First Test

Book cover of First Test
Kel will not allow this first test to be her last. Her adventure begins in the New York Times bestselling series from the fantasy author who is a legend herself: TAMORA PIERCE.
 
Keladry of Mindelan is the first girl who dares to take advantage of a new rule in…
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2
Page

Page

The adventure continues in book two of the New York Times bestselling series from the fantasy author who is a legend herself: Tamora Pierce.

A powerful classic that is more timely than ever, the Protector of the Small series is about smashing the ceilings others place above you.

…

3
Squire

Squire

The adventure continues in book three of the New York Times bestselling series from the fantasy author who is a legend herself: Tamora Pierce.

A powerful classic that is more timely than ever, the Protector of the Small series is about smashing the ceilings others place above you.

…

4
Lady Knight

Lady Knight

The adventure continues in the final instalment of the New York Times bestselling series from the fantasy author who is a legend herself: Tamora Pierce.

A powerful classic that is more timely than ever, the Protector of the Small series is about smashing the ceilings others place above you.

…