The mission of Officer Candidates School (OCS) is to educate and train officer candidates in Marine Corps knowledge and skills within a controlled, challenging, and chaotic environment IOT evaluate and screen individuals for the leadership, moral, mental, and physical qualities required for commissioning as a Marine Corps officer.
![](https://webarchive.library.unt.edu/web/20161104175305im_/http://www.trngcmd.marines.mil/portals/207/Site%20Images/OCS/IMG_3058.jpg)