<p>I looked at some student reviews and found out UC Berkeley and Rice offer free unlimited credits every semester, so you can take as many courses as u like.</p>
<p>Do any other colleges ranking top 30 offer such a thing?</p>
<p>None as far as I know. There are some schools though that will waive overage charges for certain classes, such as at U of R (where I go), music ensembles and private lessons don’t count for that. However, if you go above 6 units and don’t have those classes, you will be charged extra. In addition, you need a dean override to sign up for more than 5.5.</p>