we can use regular progress reports 

Dear Sir, can i use the information from progress report to predict students performance?

We study the evaluation of students using a 6 point scale Stapel (-3, -2, -1, 1, 2, 3). Are tested all the components of the teaching process (knowledge, skills, learning outcomes, relationships and overall satisfaction). The results are presented on the radar charts for each course participant and aggregate (average) for groups of all vintages.

I hope that I helped

Ewa

 The management of  students' performance of postgraduate students (by research)  is vital, since research scholors are expected to work with extensive independence and own time.

One measure therefore is self assessment, which is validated in  regular / monthly progress report.

The other measures are quantity of assignments ( reading material) completed, provided necessary summaries are made (projected vs completed)

Over longer terms Publications / Experiment set ups/ 

Over year - publications...

I do agree with each of the above suggestions.

However, you should look for no general and absolute scale since it depends on the university research power, tradition, complexity research programs, doctoral schools, and ranking in some ranking scales. What is important is for post-doc students to have a strong motivation for research. I consider that the first important level of the scale should be progress report presentations in workshops where there are discussions and debates, such that students have the chance to defend their ideas work and ideas. The second level should be attending international conferences at some high level in that specific domain to have an international exposure and evaluation. The third level should be publications in peer review international journals. Finally, could be writing a chapter in a book, or for some advanced post-doc students even a book with the most important results. A post-doc program should be viewed as a learning and knowledge creation opportunity.

Dear Sir,

Output of research take its own time, hence performance of student (research scholar) should be measured  owing to short run and long run perspectives. in long run quality of research publications and its utility to respective stakeholders  is performance measurement. in short run quality of work done at excelling stages of research be measured by students and research supervisor. the average ratings of student and supervisor can be termed as performance measurement.