It seems like the schools these days are forced to push kids beyond what they may be able to do. You know, Kindergarten is the new first grade, Pre school is the new K. But the problem is, you can't rush development. Think back to basic child development classes that you may have taken. There is a basic neurological development of fine motor and visual motor skills. If you skip teaching these skills, the children often will struggle understanding more complex tasks.
As an occupational therapist in a public school setting, I see it more often than not. What is the first letter you learn? A. Two diagonal lines. These kids are 3 years old. Developmentally, a 3 year old may be able to form vertical and horizontal lines and a circle. A 3 year old may struggle with the A because he hasn't developed the diagonal, crossing midline corner to corner.
So what do you do? Well, luckily there are people, many of them OTs and teachers, who recognize this. And some of those people have developed programs. One of my favorites: Handwriting without Tears. HWT is Jan Olsen's baby. She is an OT who developed the program after her son struggled tearfully with his writing. Jan was able to break the concepts down into a fun, practical and consistent technique that both kids and adults can use. It was only in the past few years that a pre-k program was developed, but it has become a staple in my personal approach.
Handwriting Without Tear, your local school department or child outreach for tips and contacts.