Setup for a db class

Hi. I'm running postgresql on a Debian box, and plan to use it for 
teaching a database class. While installing some graphical tools for the 
students (namely pgadmin3), I discovered that the students could see each 
other's work by simply browsing to someone else's database. What am I 
missing on permissions? Each student's database is set to be owned by 
them, but the contents are still browsable.

Any suggestions on configuration for a similar lab situation are welcome!

Terry

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Terry Letsche  | http://terry.letsche.net | terry at letsche dot net