Handgun goes up to level 6. 1-3 are single day classes, 4-6 are two days each. If you can demonstrate or have some proof of proficiency, they'll give you a pass on the first 1 or 2 classes.
HOWEVER:
For the relatively little money (in the grand scheme) it costs, pony up and make a weekend out of 1-3. You'll start in a classroom (1/2 of day 1), go to a square range ((1/2 of day 1, all day 2 and 1/2 day 3) and wind up in a shoot house (1/2 day 3).
Yes, they start basic. But they're efficient at what they teach and have the class progressing quickly from "hold it like this" to shooting, reloading and communicating all on the move.
Honestly, I see taking a handgun class, even a basic one, as a good intro to the school itself and a test of whether I want to take more classes from them. TDI has gotten my nod several times when others haven't.
Word has gotten out. They used to be the best kept secret in Ohio. Now they're booked by the end of February. For everything, not just handgun.