First day at the new school

Well, my first day of school at a new school was a few days ago, obviously I didn't know anyone and I was very nervous,I'm a desfem girl, short hair and baggy clothes, and I also don't usually talk much during class, This teacher comes and sees me, and AUTOMATICALLY, thinks I'm a boy, She spent the whole class calling me "new boy" and using male pronouns, and I was obviously embarrassed to correct her.

She only found out I was a girl TWO classes later, because she asked my name (⁠っ⁠˘̩⁠╭⁠╮⁠˘̩⁠)⁠っ