Share 'how do i organize a school group?'

I am a junior in high school and noticed that different clubs and groups were springing up in my school. I want to start a group at my school for people like me who are strongly against animal cruelty.My intent is to help spread awareness about animal cruelty and the ASPCA in my school and the neighboring communities. The only problem is I do not have many ideas on how do go about this...Can anyo…