Get Your Mississippi Real Estate Salesperson's or Broker's License in 30 days. Our Real Estate School's office and Main Campus are located on the Gulf Coast, in Biloxi, Mississippi. The school offers real estate courses throughout Mississippi, The main campus is supported by our Tupelo Campus (serving Northern Mississippi), along with our branch campuses in Southaven and Hattiesburg. According to The Mississippi Real Estate Commission, RETI's first time real estate exam pass rate is 91.2%. That is the HIGHEST percentage passing ever. The Mississippi Real Estate Courses at our MS Real Estate School are approved by MREC. Real Estate Training Institute (RETI) makes it easy to get your license and to stay up to date with our revolutionary Mississippi Real Estate Courses Online.