Group fitness instructors do something special: they turn a room of strangers with different goals and abilities into a class that moves, sweats, and comes back next week. The ACSM Certified Group Exercise Instructor (ACSM-GEI)® from the American College of Sports Medicine (ACSM) shows employers and participants that you can lead that class safely, using evidence-based teaching.

If you’re deciding whether the ACSM-GEI fits your goals, we’ll walk you through who it’s for, the eligibility requirements, how long to study, where it can take you, and what comes next.

Who Should Take the ACSM-GEI Exam?

The ACSM-GEI is designed for people who lead, or want to lead, group exercise classes. It’s a strong fit if you:

  • Are a new or aspiring group fitness instructor who wants a nationally recognized, science-based credential before auditioning at a gym or studio.
  • Teach a specific format such as indoor cycling, step, dance fitness, or barre, and want broader training in class design, safety, and modifications that apply to any format.
  • Work in a community, corporate, YMCA, senior living, or campus recreation setting where employers look for an accredited credential.
  • Are a kinesiology or exercise science student who teaches classes at the campus rec center and wants a credential that complements your coursework.
  • Are a personal trainer who wants to add group classes and small-group training to your schedule.

Who Might Want to Wait?

If you’re under 18 or don’t yet have a current adult CPR/AED certification with a hands-on skills component, you’ll need to take care of those first. If you mainly want to design one-on-one programs, a personal training credential such as the ACSM Certified Personal Trainer (ACSM-CPT)® may be a better first step.

What Are the ACSM-GEI Eligibility Requirements?

According to the ACSM Group Exercise Instructor certification page and the ACSM Candidate Handbook, you must:

  • Be at least 18 years old.
  • Have a high school diploma or equivalent.
  • Hold a current adult CPR/AED certification that includes a live, in-person practical skills exam, such as those from the American Heart Association or American Red Cross. Online-only CPR courses don’t qualify.

Coming soon: ACSM has announced a first aid requirement for all ACSM certification programs beginning January 1, 2027. If you plan to test in 2027 or later, build a first aid course into your timeline.

You don’t need a college degree, formal coursework, or documented teaching hours. Self-study is allowed, although hands-on teaching experience will make the scenario questions feel much more familiar.

How Do You Apply and What Does It Cost?

  1. Apply and pay through ACSM. As of the fees effective January 1, 2025, the exam costs $310 for ACSM members and $410 for non-members, including a $50 non-refundable application fee.
  2. Schedule with Pearson VUE at a test center or through OnVUE online proctoring.
  3. Take the 115-item exam (100 scored) in 165 minutes. You’ll see your result immediately, and you need a scaled score of 550 to pass.

Review the handbook’s policies before you book. You must reschedule or cancel at least 24 hours (one business day) before your appointment, or you forfeit all fees. If you need to retest, you can do so after 15 days, up to four attempts in 12 months, and retest fees apply. Testing accommodation requests must be submitted at least 30 days before your exam date.

How Long Should You Study for the ACSM-GEI Exam?

Most candidates need about two to four months of consistent study at five to seven hours per week.

  • Experienced instructors who already teach regularly and have some exercise science background may be ready in six to eight weeks. Your gaps are more likely to be in Professional Responsibilities (copyright, legal issues, emergencies) or the science behind intensity and training principles.
  • New instructors without an exercise science background should plan for three to four months. Anatomy, exercise physiology, and cueing vocabulary take time to learn, and practice teaching helps the content stick.

Sample 10-Week ACSM-GEI Study Plan

  • Week 1: Read the content outline and handbook, take a mixed baseline quiz, and note your weakest domains.
  • Weeks 2 and 3: Class Design (30%). Warm-up and cool-down physiology, FITT and training principles, class formats, exercise selection and sequencing, and music (tempo in beats per minute and phrasing).
  • Week 4: Anatomy and exercise physiology review. Major muscles and their actions, planes of motion, energy systems, and acute responses to exercise.
  • Weeks 5 and 6: Instruction (30%). Alignment and form, cue types, monitoring intensity with RPE, the talk test, and heart rate, signs of overexertion, and modifying tempo, range of motion, and load.
  • Week 7: Leadership (25%). Behavior-change models, motivation and adherence strategies, feedback, handling participant concerns, and referral.
  • Week 8: Professional Responsibilities (15%). Scope of practice, the ACSM Code of Ethics, informed consent, emergency action plans, first aid, sound levels, and music copyright.
  • Weeks 9 and 10: Mixed and timed practice, a full-length practice exam, and targeted review of every missed question.

If you can, teach or co-teach practice classes during these weeks. Cueing a real group reinforces what you’re reading faster than notes alone.

What Careers Can the ACSM-GEI Support?

The ACSM-GEI supports roles where you lead groups through structured exercise. Common roles and settings include:

  • Group fitness instructor at a health club, boutique studio, or YMCA
  • Indoor cycling, boot camp, step, aqua, or dance fitness instructor
  • Active aging or senior fitness instructor at a senior center or retirement community
  • Corporate wellness or worksite fitness instructor
  • Campus recreation instructor or group fitness coordinator
  • Group fitness manager or director, often after several years of teaching experience

Many instructors teach part-time alongside another job, while others combine classes with personal training to build a full-time career.

What Is the Salary for Group Exercise Instructors?

The U.S. Bureau of Labor Statistics (BLS) groups group exercise instructors with personal trainers under fitness trainers and instructors. According to the BLS Occupational Outlook Handbook, the median annual wage for this occupation was $47,160 in May 2025, or $22.67 per hour. Median wages were $48,140 in fitness and recreational sports centers and $45,350 in educational services.

BLS projects employment of fitness trainers and instructors to grow 7% from 2025 to 2035, with about 68,000 openings each year on average. BLS also notes that many workers in this field have variable or part-time schedules that may include nights, weekends, or holidays.

Pay varies widely with location, class format, experience, and whether you’re paid per class or salaried. A credential strengthens your case, especially with employers that require accredited certifications, but it’s one factor among many.

How Do You Maintain the ACSM-GEI?

The ACSM-GEI is valid for three years. According to ACSM’s recertification page, you need to:

  • Earn 45 continuing education credits (CECs) per three-year cycle.
  • Keep your adult CPR/AED certification current. You can count up to 5 CECs per year for completing CPR, AED, or first aid courses.
  • Pay the recertification fee ($60 at the time of writing, with a higher late fee during the grace period).

Log CECs as you earn them. Workshops, conference sessions, and continuing education courses tied to the formats you teach all make renewal easier.

What Certifications Stack Well With the ACSM-GEI?

The best next credential depends on where you want to grow:

  • ACSM Certified Personal Trainer (ACSM-CPT)®: The most common pairing. It adds one-on-one assessment and program design, which lets you offer personal and small-group training.
  • ACSM Certified Exercise Physiologist (ACSM-EP)®: A logical step if you have or are earning a bachelor’s degree in exercise science and want to work with more complex clients, including those with health conditions.
  • ACSM specialty certificates: Programs such as the ACSM/NCHPAD Inclusive Fitness Specialist Certificate (for participants with disabilities) and the Youth Fitness Specialist Certificate build on the modification skills the GEI tests, and they also earn CECs toward your renewal. Check each program’s prerequisites on ACSM’s specialty certificate page.
  • Format-specific training: Yoga, Pilates, indoor cycling, and aquatic fitness programs deepen your expertise in the classes you actually teach. The GEI gives you the safety and science foundation, and format training gives you the choreography and technique.

Start Preparing for the ACSM-GEI Exam With Pocket Prep

Whether you’re about to teach your first class or have been leading them for years, steady practice turns knowledge into a passing score. Pocket Prep’s ACSM-GEI practice questions include 500 questions across all four domains, each with a detailed explanation, plus a full-length mock exam. Try Quick 10 between classes and Missed Questions quizzes to lock in what you’ve learned. You’ve got the passion for leading groups, and now you’re ready to earn the credential to match.