Is it wrong to use a suggestive picture for a photo ignment?

I am 16 years old i am a photography major at our local college and i am going to set up at suggestive photoshoot where i am the model, Like i have no bra on andmaybe a sheet covering my . Is there anything ilegal about turning in a suggestive photo for a photo cl. s get turned in sometimes and people think they arent interesting. they are hanging in the hallways of the photo building but since i am 16 is there anything illegal about it?