Can one purchase a metro pass for students that are studying in Paris for several months? Our granddaughter is going to American University this fall and we wanted to get her a transit pass.
The most common metro pass to buy would be a Navigo Decouverte Pass. Anyone can purchase these passes, so long as they are in the Paris metro area (Ile-de-France). They are not sold online, unfortunately, only at ticket windows and Navigo agency offices.
If you happen to be living in Ile-de-France currently, you can order a resident Navigo via https://navigo.fr, and this one can be bought online & delivered for future use.