Some schools ask for a resume (sometimes called a social resume) during registration, and some chapters review them before recruitment even starts. If your school uses them, here's how to build one that works, and if your school doesn't, most of this still applies to your registration profile.
Keep it to one page. The format matters less than people think, clean and readable beats decorated. A simple header with your name, hometown, high school (or college if you're already enrolled), and graduation year. Then four sections.
Academics. GPA if it's solid (generally 3.0+, include it; borderline, ask your Panhellenic what chapters expect). Honors, AP/IB, dean's list, relevant awards. Don't pad it, one strong line beats four weak ones.
Involvement and leadership. This is the section that matters most. Clubs, sports, dance, work, church groups, whatever you actually did. Lead with anything where you held a role or responsibility, "member of student council" is fine but "planned homecoming for 400 students" is a sentence someone remembers. Jobs absolutely count, holding down a job through high school says more about you than most club memberships.
Service. Chapters are philanthropy organizations, so real volunteer work carries weight. List the organization and what you actually did, not just hours.
Interests. Two or three real ones. This section exists to give a member something to talk to you about, so "true crime podcasts, college football, painting" is doing more work than "spending time with friends and family," which says nothing.
What to skip: middle school anything, a photo unless your school specifically asks (many Southern schools do, check), your test scores, and inflated titles. Recruitment is small-world, exaggerations get noticed.
One more honest thing: the resume gets you remembered, not selected. The conversations still decide everything. Think of it as the cheat sheet the member skims before you walk in.