The aim of this research is to reveal the features of a Web 2.0 tool for measurement and evaluation that will be developed for primary education teachers, in line with the opinions of experts from the Department of Computer Education and Instructional Technology (CEIT) and Primary Education (PE). Case study is one of the qualitative research methods used in this research. Participants consisted of 20 (CEIT: 10, PE: 10) field experts, with professional experiences ranging from 1 to 27 years. The opinions of the field experts were received through semistructured interviews. The findings obtained in the research were evaluated in general. It has been determined that the measurement and evaluation Web 2.0 tool to be developed for the use of primary education teachers, should not only have a question/answer design with multimedia support, but also include awards/competition and teamwork' interaction in order to be preferred by students. Additionally, it should provide ease of use and be supported by stakeholders in order to be preferred by teachers. It is recommended that the specified Web 2.0 tool should include outcome-based and graphical-based reporting features. Especially in the Covid-19 pandemic, in order for parents to support their child and follow the student's progress, it is recommended that a detailed statistical development report be included in the parent interface limited to their children only.