I agree that if you 'advertized' your daycare as something even if it is not written in your 'contract' that contracts can be both verbal and written and advertizing is 'part' of that assumed service in the contract - however you have every right to change your business model and in return your clients have the option to either choose to stay and accept new model or to terminate the initial contract and seek alternative service elsewhere!

My hairdresser does not ask me 'permission' to offer new or different services or change her fees nor does the plumber, lawyer, mortgage broker, insurance company, the bank - you get my point ... they offer us a service, sometimes a 'contractual' service same as we do, and they CHANGE them all the time with 'notice' to me as the customer - if I do not LIKE the changes I seek service elsewhere otherwise I suck it up and assume the new contract.

My contracts have no 'end date' they just say that they will be reviewed a minimum of annually and subject to change as needed to ensure viable business model, should a change occur 60 days notices will be given and if a client does not want to 'renew' they are required to give at least two weeks notice to terminate the contract or they would forfeit their security deposit ... I put right in my notice of change that contracts not returned 'signed by X date' will serve as notice to terminate contract and the space will be refilled as of X date (the 61st day since notice of change was given) I have never had a client 'not renew' a contract - if fact they are often resigned on the spot not even 'reflected on' and over my first few years things changed 'frequently' as my learning curve to doing home childcare over 'centre care' evolved and my policies and practices changed in my handbook