The phrase "a range of grades" is correct and usable in written English.
It can be used when discussing various levels or categories of grades, such as in education or assessments.
Example: "The students received a range of grades on their final exams, reflecting their different levels of understanding of the material."
Alternatives: "a variety of grades" or "a spectrum of grades".
It's a fantastic destination for more adventurous kayakers, with white-water rivers at a range of grades from two upwards.
Qualifications will only count if they are GCSE-sized or bigger, have a substantial external assessment and require knowledge across the subject and have a range of grades for pupils to obtain.
On the basis of examination of all available test data, much of which have been recently generated, revised strength and stiffness reduction factors at elevated temperatures for a range of grades of stainless steel have been proposed, including four grades not previously covered by existing structural fire design guidance.
As a result it produces a range of grades and gives teachers a sense of the level where individual students are performing.
Arnold asked a colleagues who teaches statistics and probability "how valid a cut off is when the scores are based only on the 36 people who took the test, it covers a range of grades 5-9, and the cut-off scores are set by 8 people, not all of whom teach the subjects they are judging".
Studies that combined a range of grades were assigned the mean grade.
Microsoft also notes that this early access release includes more lesson plans, across a range of grade levels and subjects.
By focusing on classroom video that represents a range of grade levels, geographic locations, and student populations, the program provides insight into what an emerging understanding of similarity looks like as well as specific instructional strategies that can foster this understanding (Seago et al. 2010).
When this approach is applied in mice lacking Ink4a/Arf, astrocytic tumors form, exhibiting a range of histological grades, most within a reasonable temporal window (∼80% incidence at 15 weeks).
Among these, two groups of eight were selected that were balanced for gender ratio and for a range of biology grades to that point in the course.
Cultured primary human chondrocytes (passage 1) with a range of normal (grade I), mild OA (grade II) and OA (grade III) were subjected to SDS-PAGE/western blot analysis of phosphorylation of LKB1 and AMPKα.
