<human>: Give me the gist of the text in a nutshell

Said friend originally made this post on Facebook that caught my attention:

"According to my daughter's teacher, 'weather' is actually spelled 'wether', and 'trying' is actually spelled 'trieing'. Apparently, this rule also applies for any word that ends in "y" and you need to add -ing to it. Lieing, crieing, dieing.... Now I finally get why people want to homeschool."

A follow-up comment from her read:

"Now Sofia has lost a point on a paper because 'Come here Lily' isn't a full sentence??? They don't grade punctuation as long as they attempt a full sentence. How is this not complete? You (implied) Lily is the subject and then "come here" is the imperative predicate, right? I'm really not sure how to explain it well, but I am guessing it is actually a full sentence. Am I crazy? Or does this lady (who graduated from EUP) crazy?"

So I asked if she had spoken with the teacher at all, and she responded:

"Well, sometimes I write passive aggressive notes w/ corrections in her agenda, but the principal is a tyrannical asshole who threatened to press charges on me because Sofia sang a song about a shotgun on the school bus with some other kids (I asked her if she knew what a shotgun was, she thought it was like a cap gun). So, I can't talk to him either. Anytime I have a problem, they basically point out the rules and make no changes. They don't seem very concerned. Plus, Sofia is afraid that if I ever say anything the teacher will take it out on her."
<bot>: Teacher is clearly incompetent.  School staff are on her side and won't take any action.  Friend's daughter is receiving piss-poor 'education' and taking hits on her grades for not complying with teacher's shoddy misinformation.