While books about aromatherapy are useful, you might also formal aromatherapy education. The programs listed here appear to offer quality aromatherapy training, often providing qualifications to become (or start the process of becoming) a professional aromatherapist. These lists don't include individual classes for general education.
It's your responsibility to check out any training program that interests you to make sure it meets your needs. If you find a problem with a school on this list or know of one I missed, feel free to contact me with details.
This list contains programs that offer only home-study aromatherapy education. Most home-study programs are online or by email, though a few will send you materials through the mail.
American College of Health Care Sciences, Aromatherapy Department. This online college offers a variety of holistic health educational programs.
Aromahead Institute (aromatherapist Andrea Butje)
Heart of Herbs offers both herbal and aromatherapy certification courses.
JennScents Aromatherapy (aromatherapist Jennifer Hochell Pressimone)
Pacific Institute of Aromatherapy (aromatherapist Kurt Schnaubelt, PhD)
West Coast Institute of Aromatherapy (aromatherapist Beverley Hawkins - based in Canada)
A few other offerings you might want to check out:
Some of these aromatherapy schools are location specific only, while others offer both in-person and home-study courses.
Atlantic Institue of Aromatherapy, Tampa, FL
Bastyr University, Kenmore (near Seattle), WA
Institute of Spiritual Healing and Aromatherapy, in-person throughout the U.S. or home study
Natural Options Aromatherapy, various locations throughout U.S.
New York Institute of Aromatherapy, New York City
R.J. Buckle Associates, in-person courses and home-study course open only to licensed health professionals
A few other schools:
For training in Canada, search for the following programs;
Also, see the Canadian Federation of Aromatherapy.
Also, search for the London School of Massage and the Nicole Perez School of Holistic Aromatherapy.