How do martial art schools deal with this?

How do martial art schools deal with new people joining? Say when it first starts there are 5 people in the class paying £50 a month for two lessons a week. Over time that class of people grows from 5-10-20-40 people, arn’t you getting less for your money and not as good training? Schools that have been running for a long time must have a lot of people in one class, this can’t be a good thing for people wanting to train can it?

Thanks for your answer!

Well a friend of mine runs a Jiu Jitsu club as a hobby and over time expansion is inevitable, to cope with this he separated the Kids and Adults in to two different time slots, and he employed the use of several assistant instructors who are also highly ranked, thus the individual can gain a similar amount of martial arts expertise, while training in a larger class.

Another idea is splitting the class is to further categories, Beginner, Intermediate and Advanced, however this isn’t beneficial for the lower ranks as they will not be training with those higher ranks who will have more experience and know how, this will be detrimental for their training.

Kind Regards.