Yes! All salaries are determined based on the year you graduated from university and how many years of full-time teaching experience you have after graduation. Salary is non-negotiable. In the U.S., salary is quoted yearly, as opposed to monthly, and is quoted before taxes.
North Carolina uses one salary scale for all teachers, regardless of the school district they teach in. All teachers in N.C. are paid based on a Bachelor's degree, and advanced degrees are not taken into consideration. Here you can find the NC teacher salary scale. Cost of living in N.C. is generally lower than in South Carolina and Virginia.
In South Carolina and Virginia, salary scales are decided by school districts. Advanced degree salaries are paid in these states. Cost of living is also typically higher in these states.