Is this normal pre-kindergarten procedure for a teacher?

A friend has just told me that in order for her son to be accepted and attend a public school pre-kindergarten class, a teacher is required to come into their home for an overall family-living inspection. my friend asked my advice and i told her that i had never heard of this. she states her son cannot enroll, unless there is the inspection. she lives in Kentucky. Question: is this home inspection, by a teacher, a normal procedure in your state? also, does a teacher have the proper credentials to make this assessment of someones home and living conditions?