If she told you about it, than it's most likely outpatient. Usually if they send you to inpatient they won't tell you and then one night some people will just come in and grab you and take you away. It's happened to a couple of my friends. In outpatient, depending on what type of program you have, you will just have to go to some classes a certain amount of times a week, and yes they will probably drug test you atleast once a week.