They never forget. It's the same with reading. Most children learn to read easily. But not all. For some, pushing doesn't help.
Many good students give up early.
We can and must teach them the dependable phonics rules that we ourselves use without realizing it. When you give children the reliable tools of phonics, and provide them easy and entertaining ways to practice, they learn to read. With reading program it will be sooner than you think. The Reading Board Game provide just the sort of practice that some children need. It makes learning fun for them.