EFC = expected family contribution, it is a base number for your financial aid eligibility
Google “college board EFC estimator” and run it
Your EFC is not what your family pays at a particular school. That is called your net price
Schools are required to offer net price calculators. Here is Baylor:
https://www.baylor.edu/estimator/index.php
Here is TCU
https://financialaid.tcu.edu/texas-christian-university-net-price-calculator/
EC = extra curricular, the nonacademic parts of a college application such as clubs, sports, and community service