We obtained a copy of that fifteen or more years ago when we were homeschooling because it was recommended by one of the ladies on my wife's HS network.
We were told it was cpmpletely accurate (with the exception of the Hollywoodness" of it all.
I've watched it a couple a times a year just because I like it .... probably because I'm as obnoxious as John Adams and I have a Ben Franklin friend.
The most important part of the movie was its depictions of the conflicts between the various delegations. i thought the slavery issue was particularly well done from Jefferson to the triangle trade to the striking of the “offending” paragraph. The various interchanges between the various characters was particularly accurate as ribald as it was.
Given a choice between using the move or any of the various “official” textbooks I will take the movie every time. Sorry about that Dr. Keloch (college American History professor).