Most students feel that drugs are a non-issue at Rice. People that want them can seek them out, but for the most part, you will rarely encounter anything other than alcohol unless you go looking for it. At Rice parties, alcohol plays a very key role, and it’s highly visible, but drugs are not. Nevertheless, it's very feasible to have a normal and happy social life without partaking in drugs or alcohol.
As far as the scene itself goes, pot is definitely the most widely-used illegal substance—most people who do experiment with drugs do so carefully, and very few students are ever expelled over drugs. All in all, the drug scene at Rice is practically invisible. As with anywhere, it can be sought out, but it is certainly not prevalent and unavoidable.