www.ncemsf.org ... National Collegiate EMS foundation... about 100 organizations that disagree with you.
I volunteer for Brown U. EMS. We have 1 transporting 24/365 ALS ambulance, and are having a new, second ambulance delivered in June. We have 5 paid full time supervisors, a handful of per diem supervisors, and about 130 volunteers. Of those volunteers, a little over half are licensed EMTs, the rest are ride alongs. The typical duty crew consists of the supervisor, a medic or cardiac (let's not get into that debate ), at least one EMT, and two ride alongs. My duty crew, however, is a medic supervisor, a student cardiac, and two EMTs, so it varies.
Yes, we are in an urban area, so it is not that long until the "real EMS" gets here. Unless you know anything about the Providence EMS system, in which case you know that the PFD has 6 rescues doing 30,000 calls a year, and asks for mutual aid at least 9 times a day. Furthermore, depending on the crew that you get, and the time in their shift you call, you may get extremely sub-par service.
As far as call volume goes, we do about 800 a year. It's usually enough to keep me happy, although I wish PFD would let us do mutual aid... we're already here. Unions *grumbles*. About 23% of our calls are alcohol or drug related. We have an excellent average response time, and I can say with confidence that we provide good care. It's a great training program: on BLS calls, the supervisor drives, and the more experienced EMTs either tech the call or allow the less experienced EMTs to tech it, jumping in when necessary.