That's a shame.
I also benefited from some extremely good teachers, some of whom I'll never forget. My high-school American history teacher in particular was wonderful.
I wonder, maybe when your country has only 250 years or so as a nation, and 400 with British colonies (you can go back even further to the Spanish, of course, if you want more details of contact between Europe and our future territores), maybe you get more depth.
I cannot imagine having to memorize all the royal lineages that must come with German history (the Hapsburgs and everybody else!). I had to do some of that when I took Spanish history, and--YIKES!