Here is the data on research spending in the sciences as reported by the NSF
…Clark…Wooster
Total Sciences…5.2M…1.3M
Life Sciences…735K…319K
Physical Sciences…691K…407K
Physics…242K…138K
Environmental Sci…1.6M…153K
Social Science…1.6M…68K
Muhlenburg had no reported research spending.
Clark has an interesting history in that it started out as the first graduate only school in America and then added a small undergraduate college.
Most other schools have grown in the opposite direction. Clark was one of the founding members of the AAU - which is basically an academic research frat. The first American Nobel Prize winner in Physics was a professor at Clark.
Technically, it is classified as a research university, but I tend to think of it as a “Research LAC” with an MBA program. It has 2300 undergrads and about 1100 graduate students on a 50 acre campus in downtown Worcester, MA. Historically, the location has been a liability (relative to other Massachusetts colleges), but it has improved in recent years. The UMass Medical Center is in Worcester as well along with Holy Cross and WPI. Clark has a small masters and Phd program in physics, which suggests that it would have a larger selection of higher level courses than a school that does not, but you can verify that by looking at course listings.