I think so.. most pri school would have such service now.
However, not all quality would be good. Some might just help the kids to finish all HW without teaching them.
I can see most primary school students have a lot of HW every day. I feel sorry for them. That's why I prefer to choose a school with less HW to my daughter.
Some of my students can't sleep before 11pm for the HW and dictation revision!
Too much homework is not healthy to kids, they may dislike studying in the long run. That's why parents will to choose private and DSS for kids. They can enjoy reading and learning more.