Dyed my hair purple streaks using hot topic raw color my school told me I need to dye my hair back to natural color which is brown what can I do I need help

Awww that sucks lol. Umm... you'll probably have go to the hairdressers.
Is it perminant colour?
If it is then you may have to strip the colour out then dye over it which will really damage your hair.
Or you could maybe try dying it a shade darker than your hair which may or may not dye over the purple... Sorry I can't be much more help I've never used brught colours on my hair before but my friend bleached them and dyed over them and that seemed to work.

=]

With purple to tone it down and cause no damage top you hair is to use a mid/brown semi perminate colourant straight over it. It may be slightly noticeable but the school will probably be happy you have toned it right down.
Try getting the clip-in extensions for school term time, then have the purple done in the holidays!