Airport is about 40 minutes depending on traffic
Amtrak is about 30 minutes
Greyhound is about 30 minutes.
Airport can be reached by taxi, light rail which is near towson and will go right to airport but is longest way there (probably an hour- , maybe a little more. There is a Sheraton in Towson where you can probably find a shuttle but would have to call to be sure of that.
To reach Amtrak, there are buses which would run right past the school and go to the station. Again, I don't take the bus much so don't know the bus routes.
I would suggest asking at the school as this is not an uncommon question and I am sure you can get all the details.
Or after typing all this, I checked the school website and found this.