A majority of the 38% are receiving accommodations:

> This year, 38 percent of Stanford undergraduates are registered as having a disability; in the fall quarter, 24 percent of undergraduates were receiving academic or housing accommodations.

Mind, the disability rate for 18-34 year olds is 8.3% in the US, so even 24% is shockingly high. That's the same disability rate as 65-74 year olds.