The families that move from the Southern States to the Cibolo River Valley in the early 1850s were by the standards of the day educated and wealthy. Their main source of wealth resided in the numbers of slaves that they owned. Education of their children was a matter of vital importance and they acted quickly to form schools. By 1857 they had managed to organize a number of schools in the Valley. The two listed below served the Post Oak/Lavernia area.
Robert McCoy, Teacher, Cibolo School
From March 2, 1857 to October 30, 1857
| Parents/Guardians | Children |
| Thomas Applewhite | James |
| Erastus Bell | Robert |
| Erastus Bell | Priscilla |
| Erastus Bell | Emeline |
| C. G. Napier | Augustus |
| C. G. Napier | Emeline |
| C. G. Napier | Cornelia |
| T. C. Holt | Thomas D. |
| Wm. Sutherland | Walter S. |
| Wm. Sutherland | Mary E. |
| Robert McCoy | Eliza E. |
| Robert McCoy | Mary A. |
| Robert McCoy | Barbara M. |
| Robert McCoy | Frances G. |
| J. B. New | Kinion |
| J. B. New | Ann |
| J. B. New | Lenora |
| J. B. New | George |
| J. B. New | William |
| J. B. New | Kezia |
| Claiborne Rector | Emily A. |
| Claiborne Rector | Evaline |
| Claiborne Rector | B. J. Kirkman |
| Claiborne Rector | Mary J. Kirkman |
| L.P. Perkins | Ivanona F. |
| L.P. Perkins | Mary A. |
| L.P. Perkins | Millennium J. |
| Henry Yelvington | Florence J. |
| Henry Yelvington | Victoria V. |
| Henry Yelvington | Leonard A. |
| J. M. McAllister | Danl. M. |
| J. M. McAllister | Charles A. |
| J. M. McAllister | Jno. M. |
| J. M. McAllister | Mary J. |
| J. M. McAllister | Amanda J. |
| Ross Houston | Saml. R. |
| Ross Houston | Robt. C. |
| Ross Houston | Pugh B. |
| Conley Henderson | C. Fennel |
W. W. Jones, Teacher, Guadalupe School
From April 20, 1857 to November 3, 1857
| Parents/Guardians | Children |
| R. J. Floyd | W. F. Floyd |
| A. G. Goodloe | C. Goodloe |
