Has any school developed custom roles from scratch just using the role API?  Seems that API allows creation of roles without having to base it on an existing role--just AccountMembership'.  We'd be interested to find out your experience with this and what your purpose was.   We want to create a 'Non-enrolled Student' role and prevent teachers from adding Students manually but you can't do that by basing the Non-enrolled Student role on Student role.

Thanks