polar abyss
Its a good poem! I think that the imagery could be more vivid (maybe because I like alot of imagery), you could use slight wordplay and punctuation.
Your title "what i should have known and said" is strong and impactful, but you could add quotation around the words that you want to say, and those without could be what ideas that are hidden!
crisp jackal
i agree with the above, and am not sure about your situation, but you might want to consider how youd feel if this were published (though im sure you have).
i like the simplicity of this, its concise and well focused. that said, the end stanza sort of relies on… cliche sentiments? Which have their place, but i imagine youd want to expand on this image.
on a side note: the content of this may be too sensitive, and i think you could use the blood, rather than a signal of your pain, and repurpose it into ink or something along those lines. in a sense, the speaker’s blood poured out onto a page and became the ink with which they wrote and express this poem.
good luck with your school!