Dear Niazur,

Try to find ACSM books and their recommendations for non professional athlete. Periodization  and tapering is very important so look for it.

DM

Yes there are testing guidelines that will give you your given athletic level according to sex and age. As Dragan Suggested ACSM offers one of good testing manual.

The following paper might be useful if you wish to define athletes in terms of "eliteness". It my be possible to modify the taxonomy outlined in this paper and apply it to athletes in other contexts (i.e. non-professional).

Swann, C., Moran, A. P., & Piggott, D. (2015). Defining elite athletes: Issues in the study of expert performance in sport psychology. Psychology of Sport and Exercise, 16, 3-14