The paper presented the current situation of the level of elementary school teachers’ assessment on the implementation of the regulation of assessing primary school students according to Circular 22. The sample of the survey consisted of 813 teachers of some elementary schools in 6 provinces such as Lao Cai, Hanoi, Thua Thien Hue, Dak Lak, Tra Vinh and Ho Chi Minh City. The survey results showed that the majority of teachers have had a proper awareness of the purpose, principles, scientific bases and how to evaluate elementary school students according to the competency approach. At the same time, they also had very positive comments about the changes in behavior, their own perceptions and the implementation of orientation activities for students in the classroom towards developing capacity. However, a significant proportion of the surveyed teachers still had incorrect perceptions and beliefs and so far, they faced a number of difficulties. The results obtained from the survey are considered as a very useful document for management as well as educators to review the strengths and limitations in the process of implementation to devise strategies and remedies in the near future.