<p>Several points from someone who has been at both institutions, plus experience teaching at some others:</p>
<ol>
<li><p>Yale has a harder overall academic requirement, 36 versus 32 credits. It is enough to make a difference. Also I think Yale has more of a “let’s go study together at the library” as part of its generally more collective quality. Unfortunately, collectively working hard is not always fun. In my freshman year, we had a “More work less sex” rally in the Old Campus, at which hundreds attended. It was a joking way of expressing our feelings of being overwhelmed with work.</p></li>
<li><p>Yale has a harder honors system. I’m not sure how important this is, but it can matter for some things (I welcome anyone who can comment on this in real job situations). Below are the details, but the main point is that Yale limits honors to 30% while Harvard is 50%. Yale has had its policy the same for a very long time while Harvard was even easier until around 2000 when it became something of a scandal that almost all undergrads were graduating with honors. This led to several changes, the latest in 2005, to reduce this to no more than half. But perception remain of the “easy” honors at Harvard.</p></li>
</ol>
<p>a. Harvard honors (from the web page):
Beginning with the June 2005 graduating class the Faculty will award Degrees with honors such that the total number of degrees awarded Summa Cum Laude in a Field and Magna Cum Laude in a Field, upon the recommendation of the student’s concentration, will represent not more than 20 percent of all June degree candidates. In addition, the total number of degrees awarded Summa Cum Laude, Magna Cum Laude, and Cum Laude in Field will represent not more than 50 percent of all June degree candidates.
General Honors</p>
<p>b. Yale
The bachelor’s degree cum laude, magna cum laude, or summa cum laude is awarded at graduation on the basis of a student’s general performance in courses taken at Yale. At Commencement, General Honors are awarded to no more than 30 percent of the class. The bachelor’s degree is awarded summa cum laude to no more than the top 5 percent of the graduating class, magna cum laude to no more than the next 10 percent of the graduating class, cum laude to no more than the next 15 percent of the graduating class.</p>
<ol>
<li><p>Overall, grading is more related to field, professor and class size/level. Premed courses often have a mean curve at both places. Seminars in the humanities can be mostly A grades. There is some pressure to reduce inflation. </p></li>
<li><p>Saying all this, Harvard has a bit more grade inflation, though the difference is small. </p></li>
<li><p>Some outside comparison: Stanford in my teaching experience has even more grade inflation, Johns Hopkins and U of Chicago have less.</p></li>
</ol>
<p>Take away message: be more on your own but work maybe less at Harvard (unless you are motivated to work more), more shared work but also more work at Yale. Why not have a better time at Stanford. . . Or why not work HARDER at U of Chicago, Hopkin or EVEN HARDER at many other places including most major elite public universities and some LAC:)</p>