ITV is for courses that has way too many student, or way too little student.
ITV is good for student who has the will power to watch all the video on time everytime. Although you can borrow the tape from school, but are you willing to spent $2 to rent a tape.. and watch.. and return..
Pros and Cons:
Pros:
1) more flexible schedule, good for working or intensive students
2) less assignments
Cons:
1) Cannot see classmates, less chances for discussion
2) Assignement schedule could be messy
Well, good luck