Swat is a fine school, and in many ways the archetypal LAC, with engaged intelligent students and renowned academic rigor. It’s on every top 10 list for LACs.
Wash U is also a fine school; an established and well respected research university with intelligent engaged students and renowned academic rigor. It’s also on every top-school list.
But the two schools couldn’t be any more different if they tried. Visit both; see which vibe more appeals to your son.
And completely ignore the advertisement masquerading as a “list” mentioned in post #7; it’s utterly subjective and its “standards” are completely free of any objective data. You’d be much better off visiting the pre-med section of CC and/or SDN for information regarding the pre-med process.