I think what you may be trying to say is that all students should have:
A requisite amount of knowledge
Requisite means "necessary or essential"; in other words your job is to provide them the basic knowledge about a specific topic.
If you are describing a course, the term prerequisite is usually used, to describe what subject the basic knowledge is for:
This course is a prerequisite for advanced computer science.
There are many ways of conveying your intent, for example here is a phrase that describes the function of teaching:
My role is to teach students the basic requirements for high school algebra.
Although again, it would be usually be said as:
I am teaching the prerequisites for high school algebra.
These phrases all assume you are talking about basic knowledge that everyone should have.
If your intent is to say that all students should have the same amount of knowledge - that is that everyone should understand some basic concepts equally; then this can be conveyed thus:
At the end of this course, all students should understand the basics of engine repair.
As mentioned in the other answer, you cannot really quantify knowledge (as its an abstract concept). So there is no such thing as 2 knowledges; you have to define the amount of it also in abstract.