Aprivate school sets up a system by which students may advance to the next grade solely on the basis of their individual performance on an exam. given the wide variety of talents each student has, some students are able to advance to the next grade months or even years before other students. this system is:

The answer to the question: This system is:, would be: it is a system based on meritocracy, and it is known as a standardized test system, or benchmark testing.

Explanation:

Although nowadays standardized testing has been questioned as an effective method of evaluating the evolvement of a student in his learning process, the truth is that it is still one of the most used systems of evaluation today. The standardized evaluation system, or benchmark testing system, allow a teacher to ensure that all students, especially where there are large numbers, reach an acceptable level of comprehension, before they are allowed to move forward. The problem here lies in the fact that not all students have the same skills and talents, and they learn at different paces. But, benchmarking allows the teacher to understand the basic things he/she needs to know about particular students, even in cases of special needs and abilities, without having to overexert, or device a plan for several numbers of students.

the answer to your question is,

old stone age.

-mabel < 3