That ' s why it is difficult to rank H 2 K and RNG . So giving H 2 K the top 5 rather than top 4 is giving Chinese scene and RNG the benefit of the doubt <| sep |> I had a teacher who never structured his astronomy class . He didn ' t have actual assignments and constantly marked down students for things that were never assigned to out period of astronomy he taught it three times a day . We spent 80 % of the time watching outdated VHS instead of more scientific and updated stuff . He was not a very nice dude and talked down to students all the time for not knowing stuff that he didn ' t teach but thought he did . He also made us do a project and the explanation was so convoluted and confusing that most people didn ' t the project at all . More than half the class was content with an F . Being one of the only people in there who knew most of the material beforehand I like science , he constantly asked me to explain things . I obliged because I am an extrovert and secretly wanted to show him up . I basically taught my period . It was practically me up there when it came to the difference between fission and fusion . Anything about physics I had to explain because his explanations were either shit or just incorrect . He was not qualified .