The phrase "from different grades" is grammatically correct and can be used in written English.
It is used to indicate that something or someone is from a variety of levels or classes. Example: The school organized a special event to celebrate the achievements of students from different grades.
In fact, this study is a continuation of a study carried on pupils from different grades at secondary and high schools.
Considering the complicated nonlinear characteristics of multi-grade processes encountered in engineering applications, a just-in-time learning (JITL) strategy is developed to choose the relevant samples from different grades with respect to the query sample.
A series of experimental data from different grades of carbon pipeline steels (including high-strength grades such as X70 and X80) are utilized for demonstrate the validity of the proposed formulae and model effectiveness.
Other reform options include the Accelerated Schools Project, which essentially treats all students as gifted and talented; Modern Red School House, which mixes students from different grades; and a Yale University program that, like Success for All, addresses students' social needs.
Because they controlled for the fixed effect, their instrument deviated from the predicted size of the classrooms forecasted from different grades, which is similar in principle to Hoxby's idea.
Due to limited space and teachers, children from different grades sometimes learn together in class.
For this purpose, cubical concrete specimens are crushed and the broken concrete chunks with aggregates are collected from different grade of concrete mixes such as M20, M30 and M40.
In this study, we attempted to investigate the relevance of the sialyltransferases ST3Gal.I, ST3Gal.II or ST3Gal.IV expression in bladder cancer progression, by comparing their expression in neoplastic tissue, from different grade bladder tumors, with those of normal urothelium.
As a result, all "impurities" of the Assad regime were removed from 204 books for different grades.
There were 308 high school students participating, from three different grades (57.5 % women), from public and private schools, average 26.64 years of age.
Injection moulded electrodes were produced from three different grades of carbon-filled polymer.
