In this paper, the author study the development of handwriting ability of primary school students by investigating the number of errors appearing in their transcription. More precisely, 1557 primary school students were asked to copy a paragraph in a period of time and then the errors in their samples were collected and statistically analyzed. The results yielded that: The frequency of errors in the transcriptions tended to increase in grade
the upper grade students tend to make more errors than the lower ones, in particular, among all students, the number of students who made errors in grade five is the most and the number of the ones in grade two is significantly the least. Furthermore, there is a gender discrimination in the transcriptions. Among the second, fourth and fifth grades, the proportion of boys who made errors are significantly more than that of the girls. The results imply the necessity to consider the relationship among handwriting errors, speed and legibility in Vietnamese language.