Here's a possible interpretation:
It refers to a specific method or resource used for education or learning.
Meaning:
This method or resource can be more cost-effective than other methods, allowing you to educate or train a larger number of students for the same amount of money.
Example:
* "Online learning platforms can serve as many more learners per dollar spent compared to traditional classroom settings."
This example clarifies that "it" refers to online learning platforms. The sentence then states that online platforms can be more cost-effective than traditional classrooms because they can reach more students for the same amount of money.
To fully grasp the meaning of the sentence, you need more information about what "it" refers to and the context in which it is used.