Actually, this summer, I found a transcript of the questions of an entire episode of the show (namely the 1986 Student-Teacher challenge) in The Book of Tests by Allen D. Bragton (Harper & Row Publishers: New York, 1989). On p. 287, there is an introduction about the show, which is described as "now in its eighth season" (Bragton 287). The format has four rounds, a toss-up and bonus round, a challenge round for each team, and a final toss-up round where toss-ups are valued at 20 points each (Bragton 287).