becoming Teacher's College, now the College of Education.
=== 20th century ===
The university continued its growth throughout the 1930s and 1940s increasing from 232 to 402 acres. The number of buildings grew from 4 to 17. Following the attack on Pearl Harbor in December 1941, classes were suspended for two months while the Corps of Engineers occupied much of the campus, including the Teacher's College, for various purposes. The university's ROTC program was put into active duty, which made the campus resemble a military school. When classes resumed on February 11, 1942, about half of the student and faculty body left to enter the war or military service. Students who returned to campus found classes cancelled due to lack of faculty and were required to carry gas masks to classes and bomb shelters were kept at a ready. Once the war was over, student enrollment grew faster than the university had faculty and space for.
In 1947, the university opened an extension center in Hilo on Hawaiʻi Island in the old Hilo …
