1. There are 36 weak points on Koro~sensei and saying 36 in Japanese is similar to how you say "thank you in Japan"

2. The anime is meant to be a mix of science fiction and comedy

3. You know that guy that betrayed Karma and called Nagisa a "uneducated brat"

Yeah he had a name

His name is Kensaku Ono

4. The whole animation needed 2k drawings

5. The first three students at Gakuhō cramp school were

Rikuto Ikeda
Mori
Nakai

6. Hayami and Chiba went on a lot of dates however they all ended awkwardly due to neither of them being able to hold a conversation

7. Yada has a crush on Kataoka

8. Kuroko from KnB makes a appearance in assassination classroom as a customer to the e class restaurant in season 2

9. Most of the main character were based of characters from KnB

10. Nagisa's favorite food is sushi

11. It is believed that Karma's parents love Indian things due to there belief in Karma

12. Since Kurahashi grew up with her many brothers she used know how guys behave and as a result has no fanciful thoughts about them

13. Before moving to e class, Nagisa was in a concert club

14. Koro~sensei is 280cm

Everyone: do you mean wa-

Me: IS!

15. Nakamura is the one that gave Nagisa the codename "gender"

16. Nakamura has romantic feelings for Nagisa

17. None is the characters that had crushes on each other ended up dating

18. Isogai knows Maehara's entire dating story

If maehara gets into a fight with Isogai he is screwed

19. The students describe Mr Karasuma's smile to be scary

20. Hinata is jealous of Kanzaki

What she is jealous of about Kanzaki and why is unknown

21. Koro~sensei's nose is bigger then his eyes

22. It was mentioned that Kayano's tentacles talk to her

Koro~sensei's tentacles talk to him too

23. When his tentacles asked what he wanted to be koro~sensei replied with "I want to be weak"

24. Chiba has a intense glare that scares people which is why he covers his eyes with his bands

25. There are characters in the manga that are not in the anime (sadly, they will would of made the story a lot interesting)

26. Lovro has a partner called Olga

27. Nagisa bloodlust came from his family issues

28. Nagisa's dad left cause of his mothers strict personality

28. Nagisa's mother has borderline personality disorder cause of her strict parents

29. Aguri gave Koro~sensei his tie but he's the on that put the moon there

30. There was a 1% chance that Koro~sensei could destroy the moon but the government said they couldn't risk it

31. Nagisa and Karma were originally planned to be brothers

32. The first part of Karma's last name which is Aka means red in Japanese

33. Akabane originated from "Akabanebashi" which means Red Wings village which means Akabane means red Wings

34. Karma isn't a real word in Japanese so his parents had to put a kanji 

(Which is 業 this)

So nobody can read his name without a explanation

35. Karma actually likes his unique name

36. Shio means Tide in Japanese and ta means rice fields

Meanwhile Nagisa means beach or where the waves gather

37. Bitch~sensei and Mr Karasuma had a child in the manga

38. Nagisa also a child in the manga and he named his child after Karma

39. Karma didn't go into any club before joining e class

40. Koro~sensei had a ship list

His ship list was:
Karasuma x Irina
Nagisa x Kayano
Nagisa x Karma
Nagisa x Sugino (I feel like the only one that ships those two)
Isogai x Maehara
Karma x Terasaka

41. Koro~sensei IQ is above the charts, literally

42. Karma and Gakushuu hate losing

43. It is unknown who Gakushuu mother is however in the manga there is a woman in the corner that is cleaning or cooking or something in the house

It is unknown if this is a servant or his mother

44. Karma shares the same voice actor has Bakugou

(And sadly the voice actor has to go into surgery cause he sprained his voice for voicing Bakugou I hope he's okay)

45. Gakushuu's English voice actor is married to Nakamura's English voice actor

46. In the future Gakushuu becomes a CEO and the most wealthies person in assassination Classroom

47. Takebayashi has strict parents

48. Takebayashi's parents own a hospital and his brothers have a medical degree

49. Gakushuu became the CEO of a tech corporation in Silicon Valley

50. Karma says "fuck you bitch" to Manami in the Manga

I'm sorry Manami lovers and I bet Manami haters are happy

But personally I love her but I love Karma more

51. Karma's favourite food is his own cooking. His favorite drinks are drinks from "slimmered au lait series"

52. According the Irina

The kissing rank is:

Nagisa 1st
??? (I tried to look but I can't find anyone)
Karma 3rd

53. You know the two bullies that always made fun of e class

Their names are chōsuke (the one with the longer face) and Nobuta (the one with the chubby face)

54. The 2 bullies ended up living together as roommates

55. It has become a custom that chōsuke listens to Nobuta complain about his girlfriend as they bathe

56. Everyone thought those two were gay for each other

57. Gakuhō graduated from Harvard University

58. Gakuhō has a schedule which is:
1:00 - 3:00: Sleep
3:00 - 4:00: Early morning jog
4:00 - 6:00: Intensive reading of all world's newspapers
6:00 - 7:00: Breakfast (with Asano-kun)
7:00 - 8:00: Leaves for work
8:00 - 12:00: Various business processes concerning the school
12:00 - 13:00: Lunch
13:00 - 15:00: Speaking conference with the VIP school inspectors
15:00 - 18:00: Detailed meeting with the school staff
18:00 - 20:00: Dinner with politically influential people
20:00 - 21:00: Returns home
21:00 - 23:00: Education-related research
23:00 - 1:00: TOP SECRET DATA NOT AVAILABLE

59. Gakuhō only gets 1-2 hours of sleep because he has nightmares of Ikeda's suicide

Poor guy

60. Back in cram school Gakuhō earned 7 million a day and he most likely earns even more now

61. Gakuhō "hidden side" is that as a parent. If you get him to talk about his son it is impossible to make him stop

62. Irina got her seductive skills from Ogla

63. In the manga there is a girl called Kaho Tsuchiya who is Seo's girlfriend but she tried to cheat on him with Maehara which failed

64. In the manga there is this girl called Kokona who blackmailed Megu to help her study

65. Ren (from the big 5) becomes a model in the future

66. Teppei's father is a cheif reporter of a major news paper company

67. Itona's favorite subject is Science while his least favorite is social science

68. Yoshida likes Kanzaki

69. Irina wrote a book on infiltration by using seduction

70. Karma and the reaper (not koro~sensei) share the same voice actor

71. Mr Karasuma's favourite animals are dogs

They don't like him tho

72. Mr Karasuma's weakness is that he's dense

73. The reason why Mr Karasuma didn't cry during Koro~sensei's death is because a lot of people important to him have died in the past

That doesn't mean he wasn't devastated when Koro~sensei passed away tho

74. Kotaro and Aguri were engaged however that didn't stop him from seeing many other woman

Bastard

75. Unlike the rest of the girls Nakamura prefers wearing pants as street wear

76. Nakamura use to be in a Radio club before e class

77. Rio favorite good is pizza

78. Nakamura had a brother

79. Nakamura was paired with Sosuke during the test or courage

80. Nakamura's hair is dyed

81. Yoshida is childhood friends with Hado

82. When Shiro first met Akari (kayano) he acted nice and even showed her a magic trick however Akari saw through the act cause of her acting experience

83. The reaper (not koro~sensei) had a father that basically abandoned the reaper and focused on work instead

84. Kayano's greatest talent is her high pain tolerance

85. Kayano is represented as a bunny

86. Nagisa is represented as a snake

87. Karma is represented as a lion

88. Koro~sensei spent 100,000¥ remodeling Ritsu leaving him with 5¥

89. Manami's favorite food is honeycomb toffee

90. There is a spin off called koro quest where everyone gets sent to e class for having bugs

Nagisa- his states change randomly
Karma- when he thinks he's above someone his luck decreases
Okuda- she can create positions that doesn't exist
Isogai's- his lack of money makes him not be able to afford the back or the armor but only the front
Sugino's- the magic actives long after it should
Chiba hayami- no matter where they aim their shot sends you hitting in between the targets legs
Kurahashi- her magic only attracts bugs
Kayano- she says her bug is her cup size but koro~sensei denies this
Terasaka- his magic turns to liquid
Fuwa- she knows that the whole thing is a anime

91. There is a assassination classroom game

92. Yukiko has mastered first person shooters games

According to her she started to help with assassination

93. Nagisa was originally meant to be a girl

94. The girl want came in as Ritsu's proxy during the exams in a girl called Onaga Nise daughter of Gouki Onaga

95. Her name is a pun cause Nise is "false" and "counterpart" in Japanese

96. Okano is described as "Brash and Clumsy"

97. Gakuhō sees koro~sensei as a role model for his teaching

98. There was a little extra part near the end of season one called 'Jelavic's super secrets skills' which revealed talents that Bitch sensei has

99. The first one was that Irina could control her blood circulation making her able to make her face red, pale, sick looking, etc however when she told the students they called her a knock off of koro sensei

The second one was that Irina could arrange and rearrange things with her tongue, kind of like the skill of being able to make a note with cherry stems

The third one was that Irina is a master of disguise

100. And for the last one

There was a total of 39 weaknesses and 9 thing that koro~sensei hides from his students

Weakness:

1. When he tries to act cool, his weaknesses show.

2. He is surprisingly quick to panic.

3. No Tolerance.

4. His punches are weak.

5. Boobs (natural weakness).

6.He is humble and subservient to his superiors at work.

7. He has no patience for wire puzzles.

8. He gets motion sickness.

9. He can't sleep on a pillow other than his own.

10. He worries about appearances.

11. He can't handle hot food.

12. Getting wet (natural weakness).

13. Juicy gossip.

14. Hackneyed plot developments make him cry.

15. He gets taken in by rumors.

16. Time right after molting (natural weakness).

17.Time right after regeneration (natural weakness).

18.His body goes rigid when bathed in a special beam of light (natural weakness).

19.When he returns to normal after a serious situation, he gets embarrassed.

20.He can only draw simple pictures.

21. Heat fatigue.

22.He is strict about poolside manner.

23.He can't swim (natural weakness).

24.He likes to gossip.

25.He is weak against the occult.

26.If he can't gather people, he feels worthless.

27.Tone-deafness.

28.He sucks at hiding.

29.He gets carried away by official positions.

30.His heart (natural weakness).

31.Not related, but acts like a doting parent.

32.Gets insurance to avoid getting hurt.

33.He doesn't really know what "your own football" means.

34.He sucks at reporting.

35.He suffers from road rage

36.Restructuring (natural weakness).

37.Grabbing all his tentacles at once makes him unable to move (Natural weakness).

38.Unintentionally adding insult to injury.

39.Completely oblivious to the mood in moments of high tension

Things he hides from his students:

1.Painfully narcissistic designs.

2.His room resembles a dumpster.

3.He only makes petty wagers.

4.A bit of a degenerate octopus.

5.His purpose has shifted from using porn magazines to collecting them all, at this point.

6.Starts a nights' off with cassis and orange.

7.Takes forever to decide on an appetizer.

8.Really can't hold his liquor.

9.Kind of like an old geezer.

Extra

Reasons they are in e class

1. Nagisa- poor grades
2. Karma- bad behavior (the only reason why he wasn't expelled was because of his excellent grades)
3. Kayano- breaking the principals equipment
4. Isogai- having a job (which is against the rules)
5. Okajima- it isn't confirmed but it's most likely from his perverted bahaviour
6. Okano- ??? (Most likely her poor grades since the semester tests since the only time she got past 100 was the 1st end of semester and she only got 85th
7. Manami- she was only good at science but not any other lessons
8. Megu- her friend from elementary blackmailed Megu to teach her how to swim so Megu ended up slipping on grades
9. Takebayashi- poor grades
10. Yada- she was skipping class to see her Ill brother (in the manga it was confirmed that what she said at the cops and robbers game was true)
11. Mimura- most likely poor grades since during the 1st season Terasaka got mad at him when he found out Mimura got his grades up
12. Nakamura- she played dumb to get friends until it soon wasn't an act. So bad grades
13. Yoshida- poor grades
14. Yukiko- she went out and partied instead of studying so her grades ended up slipping
15. Hayami- poor grades. In season 1 during Takaoka's plan there was a flashback of her parents yelling at her cause she 'didn't care' about her poor grades
16. Sugino- poor grades. He was focusing more on playing baseball rather then studying
17. Fuwa- it isn't confirmed but it's most likely because she read manga instead of studying so her grades slipped
18. Muramatsu- poor grades
19. Hazama- her looks and things she did made people uncomfortable so people complained to the principal and after constant complaints he sent her to e class
20. Chiba- drama going on at home made his grades slip cause of the stress
21. He was only good at art class
22. Sumira- she was bullied from her weight and her grades slipped from the stress and depression
23. Terasaka- bad grades
24. Itona- transfered there to assassinate koro~sensei
25. Ritsu- transfered there to assassinate koro~sensei