Hello All 
I am new to the community so please be patient.
Does Avast provide any child protection at any level of the software?
Thanks you for your help
No
can openDNS be something for you
I’ve read some fairly good reports about K9.
Not a parent, never tried it, but it should do the job.
Also consider giving the kids their own (limited) user accounts, password-protect the main account, and have the computer in a shared room, rather than in the child’s bedroom.
I am a user of K9 Web Protection and I will give it a 5 star rating
Cons:
If you block one site then it means none of your user a/c s can visit it including yourself even if your a/c is admin
Also K9 is free to home users.
From what I know, avast! has this connection with Net Purum.
Alwil owns that product.
It is more for corporate/small office users though for networks than individual pcs