That's funny. I asked my sister, who was a kindergarten teacher at the time, what I should teach my DS to prepare him for kindergarten & she said nothing. She said kindergarten would bore him, if he knew too much going in. In our case, she was right. When he entered kindergarten many of the kids were ahead of him. TBH, I taught him very little, due to her suggestion. Naturally, I had read to him, but didn't make an effort to teach him anything. By the end of the year, he surpassed all of the classmates. In our case, she made the correct suggestion. I guess it depends on the student.