ROI, or return on investment, measures
how much profit you earn relative to
how much you put in, usually expressed as a percentage. For an education franchise, it answers:
"For every dollar I invested to open, how much did the business return?" It compares a coding school against other uses of the same capital. ROI builds over time
as the center matures—the first year funds the setup, and
returns compound as the student base grows and stabilizes.