We don't offer EMT-I in Suffolk County NY, just EMT-B, EMT-CC, and EMT-P.
My EMT-CC class consisted of:
160 classroom hours (approx 5hrs per week for 32 weeks)
63 hrs clinical rotations (20 ER, 20 OR/Resp, 10 CCU, 8 Phleb, 5 Medical Control)
90 hrs riding time (60 BLS, 30 ALS, from sig 2 enroute to sig 5 leaving hospital)
8-station BLS practical (8 hrs)
10-station ALS practical (8 hrs)
County protocol exam (1 hr)
State BLS exam (2 hrs)
State ALS exam (6 hrs)
That doesn't include all of the out-of-class study sessions, non-call time just waiting for a call (doesn't count for anything), and study time.
It was a lot of work - especially because I work 60 - 70 hrs a week, but I am very glad I did it and I love what I do even more now.