Adults may not want to be in the same class with children, some of whom may be able to perform the techniques better than their old counterparts. Most instructors recommend starting with one type of martial art and learning its essentials before trying another style. However, many martial artists like to be exposed to a variety of styles, and compare them to their own, instead of focusing on one art. Ask instructors about the size and composition of classes before signing up for lessons. Adults may not want to be in the same class with children, some of whom may be able to perform the techniques better than their old counterparts.
Many new students prefer to be part of a large training group, rather than a small class.
However, the benefits of a smaller class should not be overlooked. You should also check with the instructor about what time of day classes are offered, as well as their duration. Some schools offer 90-minute classes, but most seem to be an hour long. Decide what length you would be most comfortable with before committing to a school that offers classes that are either too long or too short for your tastes. The attitude of both the instructor and the students can tell you a lot about a school.