There are 2 different counselor accounts that can be established on College Greenlight:
Organization Counselor/Mentor: this counselor will only able to see the student accounts that are directly connected to them. Counselors that work with a subset of the organization's student body would benefit from this type account.
Organization Administrator: this counselor can see all students connected to the organization account, even if the students are specifically connected to them. If it is important for you to have access to all of the students your organization serves, this is the appropriate account for you.