Parent wants to move student out of my class due to “frequent behavior calls.” Today, the student called me a “f-cking b-tch”

I am at my wits end and looking for some advice. I’m an elementary school teacher at a lower income school. My admin is not the best and we are just trying to get through to spring break. I have a student who has recently started acting out and behaving poorly in class (rolling around on the floor, bullying, throwing things, etc). The behavior started about a month ago and I frequently called parents to update them. Parent let me know that this is not new as this student has been known to start acting like this during the 2nd part of the year. This student is incredibly bright and I know a lot of this behavior stems from boredom. My hands are tied as our curriculum is brand new and incredibly strict with time. I have tried behavior charts, reward systems, class jobs, positive reinforcement and nothing is showing improvement in behavior. Every day, the student is getting worse and it’s making my other students act out as they see that no consequences are given (at my school, teachers are very limited to consequences we can give without admin approval).

Recently, this student received a write up for using finger guns and saying they wanted to unalive everyone. I did standard procedure and called parents to inform them of the behavior and let them know about the write up. They seemed to take it well and I promised to keep them updated. The next day, I received an email requesting a conference with my principal to discuss “homeroom options due to frequent behavior calls” and that they were worried this would affect the students academics. I have been a nervous wreck since then. Reasonably, I know I have nothing to be nervous about but I’m still very new to teaching (2 years) and I’m terrified of failure. I also worry as I tend to have a louder speaking voice and I am always worried that people take it as yelling. That’s why I incorporate “friends” “no, thank you,” and “go back and try again” into my corrections.

I suspect the parent has told the student that they will be moving classrooms (possibly) as the behavior has reached an all time high. Today, I had my students practice standing quietly in the hallway before entering the cafeteria as they would not stop talking. When we finally made our way to our table, the student in question was stopped by my teammate. They told me that the student had said “we had to wait in line because the teacher is a f-cking b-tch.” This was the final straw for me emotionally. I walked to my classroom and broke down. I feel like there is nothing I can do to help the parent understand just how terrible their child’s behavior has been and I’m exhausted. No child knows those words with first hearing them from another source.

I am looking for any advice on how I should handle this situation. I feel like I am failing as a teacher and I am not sure how much more I can handle before I have a breakdown. Please help.