I knew an orthodox gentleman, back about 1990, who was trying to find something useful to help some catechist, and he chose the Baltimore catechism as a supplement because of so much of it that is right even from an Orthodox point of view. Or so he told me. He also at one time ran a realty business called Scrooge and Marley.
That old Catechism is spot on for Orthodoxy in virtually all respects! For that reason it should be pretty easy for an Orthodox Christian to score very high on the quiz...and we are pretty traditional after all! :)
By the way, 6 years of the Sisters of Mercy and being drilled on the Baltimore Catechism by my father, of blessed memory, virtually every night didn't hurt my score. I never got anything below an A in Religion (which was a good thing for me 'cause if I had, my life wouldn't have been worth living)!