The phrase "according to the grading system of" is correct and usable in written English.
You can use it when referencing a specific grading system that is used to evaluate performance or achievement in an academic or professional context.
Example: "According to the grading system of our university, a score of 90% or above is considered an A."
Alternatives: "based on the grading criteria of" or "in line with the grading standards of".
The cleavage stage embryos were scored based on cell number and the degree of fragmentation, according to the grading system of Hardarson (2001) [ 12].
Results of smear microscopy were recorded according to the grading system of the International Union Against Tuberculosis and Lung Diseases (11 ) as –, scanty, +, ++, or +++ AFB.
Hippocampal sclerosis (HS) was diagnosed on cresyl violet (Nissl -stained sectioNissl -stainedied according to the grading sectionsf Wyler by andeuropathologist.
Thirty-four were at grade I, two hundred three at grade II, sixty-eight were at grade III, according to the grading system of the World Health Organization (WHO).
The tumours were classified according to the grading system of Shimada et al (1999); (1) NB, Schwannian stroma-poor (UD: undifferentiated, PD: poorly differentiated, D: differentiating); (2) GNB (nodular or intermixed) and (3) GN, Schwannian stroma-dominant.
Indication for surgical intervention at the vertebral column included progressive neurological impairment according to the Grading System of Frankel (1969) assessing sensory and motor function or severe vertebral body lesions.
However, the level of evidence of its efficacy remains low according to the grade system of evidence quality [10].
A histological grading of the bone sarcoma was performed according to the grading system proposed by Borders AC [ 15] and a histological evaluation of soft tissue sarcoma was performed using the grading system of the French Federation of Cancer Centers Sarcoma Group system [ 16].
The histological grade (I-III) of tumor was determined according to the grading system proposed by Edmondson and Steiner.
According to the GRADE system, quality of evidence is rated as: High: Considerable confidence in the estimate of effect.
The state of the scientific knowledge was subsequently rated according to the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) system [ 11].
