How can i convince my mum to home school me(i have a reson)?

Okay so cause ive had chicken pox and i haven't been to school in a week and 2 days and people have been saying stuff like its cause my best friend went home (she came down in the 1 week holiday) and i was upset cause she had to leave so people have been saying stuff about me like im a slut and stuff and im a saying i kissed my friend keleigh (when i didnt) on webcam to this boy daniel when the truth is i didnt even go on webcam to him and then now the teachers are saying stuff about me saying im a waist of space and will never get a job and im going to be a slut and stuff and schools better without me cause im a little tramp (my cousin heard them talking she goes to my school and they said oh kayla blah blah blah) i really dont like it,my cousin said every1 in yr 7 is talking about me i really cant take it any more im sat here crying ;[ how do i convince my mum to let me be home schooled?