"Lets start with the start,
You have a school system. A prestigious school, bound by rules. The kids there? they arent kids, in welton academy there are only students. You have these rigid moral structures that the students are made to recite and memorise, no real life lessons, a show perhaps to display just how honoured and respected and disciplined they are. The school is a show for churning out lifeless robots who will become "honourable" memebers of a society, The american dream. There are no real lives there.
Todd anderson our main character isnt really the focus of the plot, but its more like we see what he sees. When he meets Neil, Todd sees a companion. Whereas todd keeps to himself and is a nervous wreck, neil doesnt judge him, neil doesnt judge how he isnt a "confident" student and simply tries to help him break out of his shell, which is why their relation is important. Neil is bright, optimistic and caring yet he struggles too, more than he shows.
When neil's father scolds him, we see how each students is bound by these unrealistic expectations of being lifeless and just do well academically. Their dreams are killed by the society. Neil is getting crushed under the weight yet he puts on a brave mask to help.
Here i would say, the school symbolises the real life society, the social-official environment of the whole world. The teacher aka the authorities are the expectations that are placed in a real world just so one can live (like earning a lot even if it means you have to be stressed) and the students symbolise all of humanity where each one has their own dreams and art is to be embraced, emotions are to be lived, not killed by a lifeless environment in this society that we have created. We could say that the school represents a corporate capitalistic society, quite dystopian.
Now in the scene where they teach the students about poetry, You can see that the teacher is restricting poetry to some strict standards which shouldnt be there. Poetry, which is supposed to be pure human expression, where one can paint their words freely, need not be bound by a graph. It cannot be that simple. Poetry isnt supposed to be plotted on a small page. Its much much bigger than that. There is individuality in each piece which cannot be contained in these small mathematical expressions. Poems bleed and the blood will seep through pages, and stacks of it, you cant confine it on a single graph paper
When John keatings comes, He is the rebel. The one who can set these humans free. Symbolising The only sparks in our society, the rebels who expressed freely and rejected society. He makes the students tear their book, stand on the desks, march outside, things which could never be allowed by the school, by strict standards, but he shows the students that human life is beyond their rules. Humans cannot be bound by rules and everyone can express freely. He teaches them the way to live. Shows them the way to life. He is hope. He tears the first page down to reject the suffocating system, to endorse expression.
The sequence where he tells students how essential poetry is, is him enlightening the students. Like he is screaming "There IS MORE TO LIFE!! PLEASE DONT GIVE UP!" . Noble pursuits are one thing but poetry is what we live for, he says, he knows it. Art is essential. Art is the way of human life. A tree of wisdom perhaps. The bodhi tree.
Neil who was bound by the standards especially, sees this, finds comfort in it and embraces it as a whole. Neil embraces it the most because he needs to be freed the most. He sees hope, a way to freedom and his dreams.
He makes todd throw the gift todd doesnt like because now he too screams "THERE IS MORE TO LIFE TODD! THERE IS MORE TO IT! MR.KEATINGS TOLD US!". You dont need to accept what you dont like or find joy in, throw it, break it, reject it!
Carpe diem. Seize the day. They form the dead poets society because now they are enlightened, they will rebel against these systems by not letting their creativity die. They will not follow rules because who is the society to trap beautiful souls in strict standards? they get this and now they recite poems. They wish to suck out all the marrow of life. They meet in a cave, secluded from welton academy, a free space. Home. They are comfortable there, boundless. Unrestricted, freed from the shackles of society
When keatings says this "i wish to suck out the marrow of life" sequence, neil understands, that if he keeps listening to his father, he will never be able to live and he will die knowing he hasnt lived.
Mr.Keatings tells the students to call him captain, because he will show them the way out of this storm. You can trust me he tells.
When todd reads out his poem, he is talking about the truth that one can never achieve his dreams and no matter how much u find it, there is no safety from the truth and all u can do is scream (the blanket is never big enough) With john breaking his shell, we realise that he has pent up emotions which he cant really express due to the rigidity of the system, and guess what helped him? Poetry. Todd was scared of the truth of not being able to follow his dreams, of not being good enough and he says in his poem that he is trying to protect himself. He screams his soul out. Poetry made him bleed.
Then when Nuwanda rebels in a way which harms him (he gets physically punished), we understand that these kids yearn for freedom so much that they can be radical.The school will try to supress rebellions and defiance (the dead poets society who reject their rigid system). They will bear punishments and everything just to feel a moment of freedom, just to sieze the day. The school can supress the fire but the sparks are still there, whats a rebel who cant bear some pain for the cause? Nuwanda is brave, he wont let a little punishment throw him off. But this gets balanced when jhon keatings tells us that rebellion, if done at the cost of hurt might not last long. He teaches students about the way to rebel, to not get crushed trying to free themselves from a cage.Recklessness can get you beheaded.
Now in the last sequences, the scenes get darker (cinematography vise. low exposure). Neil wants to act. His father wont let him. Captain show him the way!, he does. Captain shows him the way. "follow your passion". He tries to convince his father but he doesnt budge, sieze the day, neil will act. Carpe diem. He remembers and he wont let this one opportunity of being free go. He practiced, he worked and he cant just leave eveyrthing! Neil wants to sieze the day, let him act. And he does. He acts. He acts exceptionally well. He knows how his passion feels, how expression feels, how wonderful the freedom of acting is. but this was done by rebelling against his father. He became puck and he was truly happy while acting but now that his father wont let him, his father is disappointed. Neil wont be able to act. What good is there to life now? He has experienced living, he had been free for a few moments, but now he has to live with its absence for his whole life. He knows the taste of it and now he craves it, longs for it knowing he will never get his hands on it. Is it really worth it? is living like this really worth it? Its Not. He cant live in this cage now that he knows how high the sky is. A free death is better. So he wears his crown, as a last act of rebellion and regaining the authority over his life and uses his father's weapon in his father's office, "father you killed me. This is your gun". Or His father's system killed him. He died as his character. He died while he was free. He died doing the one thing he loved the most. He wasnt neil when he died, he was puck. A chaotic and playful forest spirit, not a broken child. "Father you didnt kill me. You killed puck. The actor within me. And without this i am nothing and neil's identity is nothing". His father killed puck, the actor within neil, and without that actor, neil is nothing.
The mourning in the school is shown as a very formal procession like its being done for the sake of it. A student died, not a life with dreams. But Todd and all his other friends know that dreams have been killed. They are in a snow-laden area (which symbolises sadness and buried emotions), and todd tries to act like he is fine without neil who was his guiding light, but he isnt. He throws up, what is he supposed to do without his Captain? Neil, the only one who could understand Todd and help him, he isnt here anymore. Just when Todd was a bit freer.His yawp was for neil, his own captain, his best friend. If neil couldnt bear it and do it, does it mean that no one can?
Neil didnt just kill himself, he rebelled. He dies like a martyr would. He sacrificed himself to show everyone how important dreams are.
John keating re-reads the verse of "to find out that i had not lived at all" and now he wonders, did i push neil too far? He showed them the light, but neil couldnt achieve it. He couldnt live. He couldnt suck the marrow out of life. He knew too much. He could live like an artist but society wont let it happen. He knew. Captain, was it your fault? You were supposed to guide these young minds. But now neil is gone. He couldnt fight. It was too much for him to bear. His father, his school, a rigid system killed him. Killed puck.
The colours of the movie are colder here and more melancholic. The tones shift to blues.
Now the school as a system cant take the blame. It will hurt their honour. Blame it on the captain, How dare he show them the reality? He wasnt supposed to show the students what they can be. Its his fault that they got depressed when we (the school) didnt let the students what they wanted to be, how dare he show them what they could be? They blame it on him. The dead poets society's formation was his fault. The memebers were pressured to blame it on keatings. The monarch knew of the rebellion,and the guillotine was ready. Keatings, you killed a student. "Kids it was just a phase", "He tried to poison your minds" they tried saying. John's teachings misguided them. Our school and its reputation must stay clean. The school shifts all the blame, since the subconscious ways they kill their students isnt really up for debate. Nobody notices those. How dare one oppose the system? How dare he ruin our prestigious school's reputation? He needs to be diminished. The rebels cant do anything now, they are still just mere souls, kids with dreams in a big big society, their captain killed; but now they know what life has to offer. They are enlightened and they will fight for it.
About the romantic subplot i believe that either it could symbolise:
Teen rebellioj through love and love being poetry in itself or
It was symbolic. His love (chris) being his dreams, the other guy (chet) being the fear of failure. He is chasing his dreams (the girl) but its scary, he wont know if he will ever achieve them (not being sure about the girl's answer) and what if society doesnt let him follow his dreams? (the other guy beating him). But he fights with chet and in the end he gets chris (he fights for dreams, physical fight symbolises the fight for dreams. He took the leap of faith and then he achieved his dreams.) A different outcome for someone who chases his dreams too.
And at the last, when the students stand on the desk, its a tribute to their captain.Why did they choose the poem? because in the original poem, the captain showed them the way, everyone cheered for the captain, but the captain lied dead on the ship. Thats John keatings. He enlightened the students. He showed them the way and fought for them. They know the meaning of life. They can fight for it now, But, the captain is dead, he is no longer with them (since he got fired and crushed). They stand above the desks to crush their academic expecations placed on the very same desk. To see the world from above. "But my captain lies dead"
Its realistic, because there is no grand change. One man cant change the system. But he changed people. He changed a handful of lives. He simply got fired, the school was back to its original system but now the students know their capabilities. They know that dreams must be followed, days must be seized. They were left with knowledge. Captain O' Captain, you lie dead but we cheer for you and now we know how to battle storms.
Its not grand but they are thankful. And there, it ends.
Knox fought for his dreams (the girl was his dreams) by physically punching the fears (chet). People who have courage.
Meeks fought for his dreams but was scared (how he found the easier way out of blaming keatings). People who back out.
Todd fought for his dreams through neil and poetry and failed when he lost his guiding light. People who need support.
Neil fought for his dreams against inevetability, and it wasnt possible.People who are left hopeless.
Nuwanda is brave and funny and chases his dreams by radical rebellion but he has deep feelings. People who put up a fight even though it hurts and fluctuate."