As a general rule, you should always choose the most-specific type.
So if your business matches the description for ChildCare
("A Childcare center."), you should use this type instead of the more general LocalBusiness
(or even the most general Thing
).
Every complying consumer should be able to understand that ChildCare
is some kind of LocalBusiness
. Only if the type is very new (or if they no longer update/maintain their product), consumers may need some time until they recognize it.
If you want to make sure that those consumers also understand it, you could provide both types:
<div itemscope itemtype="http://schema.org/ChildCare http://schema.org/LocalBusiness">
</div>
But that’s typically not needed.