UNSC School of the North Star
From Halopedia, the Halo wiki
The UNSC School of the North Star was a United Nations Space Command training and education facility on Earth[1].
Captain James Cutter was enrolled in the school in the Fall of 2500, where he studied astro-navigation and political science, implying the school is a college or university. The skills he learned here would aid him greatly when he became Captain of the UNSC starship, Spirit of Fire.