H/SS requirements:
- Caltech: 108 units out of 486 for graduation (22.2%); 36 units in H, 36 in SS, 36 in either. Most H/SS courses are 9 units, so 108 units would take 12 courses.
- MIT: 8 subjects of at least 9 units each (but most are 12 units each) for a total of 72 out of 360 (20% with minimum unit H/SS) to 96 out of 384 (25% with typical unit H/SS)
- Harvey Mudd: 11 courses for 33 units out of 128 for graduation (25.8%).
So they are all in the same ballpark for volume of H/SS requirements to earn a bachelor’s degree.