OLYMPIA — Freshman Wasmine Ghosheh said she noticed it in the dorms. When the 19-year-old from Sonoma County, California, arrived at The Evergreen State College in September, she met students who were supposed to have roommates but ended up with their own rooms. “There’s a lot of space — it’s spacious, let’s say,” Ghosheh said the Friday before Thanksgiving break in a nearly empty cafeteria on campus. Evergreen’s enrollment this fall was 2,854 students, down more than 40% from its peak head count a decade ago. The decline, corresponding with an economic recovery and mirroring a trend in liberal arts...