Bell school was 4 days long. Three in the class rooms going over systems of the aircraft, preflights, looking a parts and pieces. It was ok but expensive. (100 bucks and hours for 20 hours) The flight portion is good , you get to do everything you can think of that your current employer would cring at if you even suggested it. Full downs every which way, forwards ,sides ways , from a high hover, slow , fast, BACKWARDS, stuck pedal, hydr off.
I got checked out in just under 3 hours.. some guys longer...
I would suggested that you be proficent before going, these guys are not there to teach you how to fly , but to feel comfortable in the aircraft. At a 1250 hr in the l4, it could get expensive fast..
hope this helps
rb