A large number of educators develop automated tests for assessing students knowledge at the their universities. When two or more educational institutions are merged into a new one, some subjects have to be reorganized as well. In this work we consider facilitation of a decision process related to choosing the best test for assessment of students' knowledge among the locally developed ones. To attain a higher quality of the evaluation process we propose involvement of a committee consisting of faculty members who rank tests on one subject but are developed by different individuals. The evaluation process is based on application of grey theory and linguistic variables. Grey theory is chosen over other mathematical methods due to the theory's ability to handle incomplete information.