At its simplest, credit is your track record of repaying borrowed money.

We’ve all gone to school, so let’s use a report card and GPA analogy to describe credit reports and credit scores. Let’s take you back to middle school (sorry if this is painful).

First, imagine your teachers. Teachers keep track of how you’re doing in class—how you perform on homework, quizzes, and tests.

In this analogy, lenders play a similar role. Lenders—such as a credit union, bank, or credit card company—keep track of how you handle borrowed money, including whether you make payments on time, how much you owe, and how long you’ve had your accounts.

Next, imagine the school administration office. The administration office collects information from all your teachers and puts it together in one place: your report card.

That’s similar to what the credit bureaus do. The three major credit bureaus—Equifax, Experian, and TransUnion—collect information from lenders and compile it into your credit report. Because lenders may report at different times throughout the month, your information may vary slightly from one bureau to another.

Then, think about your GPA. Your GPA takes the information on your report card and turns it into one number that gives a quick snapshot of your overall performance in school.

A credit score works in a similar way. It uses the information in your credit report to create a number that helps lenders quickly evaluate how you’ve handled credit. Credit scores generally range from 300 to 850.

Continuing the Analogy

A strong GPA can open doors and create more opportunities, while a low GPA can make it harder to get into the college or program you want.

Credit works much the same way. A strong credit score can help you qualify for loans, get better interest rates, and improve your chances of being approved for a rental. A low credit score can make borrowing harder and more expensive, and it may also lead to higher insurance premiums, rental challenges, and, in some cases, employment hurdles.

The good news is that credit can be built over time. Two of the best places to start are making all loan payments on time—and really, all payments on time—and keeping your credit card balances low.

Just like raising your GPA, building credit doesn’t happen overnight—but steady habits can make a big difference over time.