| Business | Phone |
| Charles Barnes School-Real Est 1120 S Air Depot Blvd # 10, Oklahoma City 73110 | (405) 733-7277 |
| Charles Barnes School-Real Est Founders Tower, Oklahoma City 73132 | (405) 728-5400 |
| Prodevelopment Systems 8108 Nw 117th St, Oklahoma City 73162 | (405) 721-6077 |
| Southwest Real Estate Learning 1624 Greenbriar Pl # 600, Oklahoma City 73159 | (405) 691-4530 |
| Roger De Spain School-Real Est 401 N Meridian Ave, Oklahoma City 73107 | (405) 947-4448 |