| St. Mary School | Gainesville | Private school | PK–8 | 0 |
| ST MARY'S ACADEMY CHARTER SCHOOL | BEEVILLE | Public school | PK–6 | 0 |
| St. Marys Cathedral School | Amarillo | Private school | PK–5 | 0 |
| St. Marys Catholic School | Sherman | Private school | PK–8 | 0 |
| St. Mary's Catholic School | Taylor | Private school | K–11 | 0 |
| St. Marys Catholic School | Temple | Private school | PK–8 | 0 |
| St. Mary's Catholic School | Brownsville | Private school | PK–6 | 0 |
| St. Marys Central Catholic School | Odessa | Private school | PK–8 | 0 |
| St. Mary's Elementary School | Fredericksburg | Private school | PK–8 | 0 |
| St. Marys Episcopal Day School | Bellville | Private school | PK–K | 0 |
| St. Mary's Hall | San Antonio | Private school | PK–12 | 0 |
| St. Marys School | West | Private school | PK–8 | 0 |
| St. Matthew Catholic School | El Paso | Private school | K–8 | 0 |
| St. Matthew Catholic School | San Antonio | Private school | PK–8 | 0 |
| St. Matthew's Episcopal School | Austin | Private school | PK–K | 0 |
| St. Matthew's Episcopal School | Edinburg | Private school | PK–5 | 0 |
| St. Michael Catholic School | Weimar | Private school | PK–8 | 0 |
| St. Michael Catholic School - Houston | Houston | Private school | PK–8 | 0 |
| St. Michael's Catholic Academy | Austin | Private school | 9–12 | 0 |
| St. Michaels Catholic School | Cuero | Private school | PK–6 | 0 |
| St. Monica Catholic School | Dallas | Private school | PK–8 | 0 |
| St. Monica Catholic School | Converse | Private school | PK–8 | 0 |
| St. Patrick Cathedral School | El Paso | Private school | K–8 | 0 |
| St. Patrick Catholic School | Lufkin | Private school | PK–8 | 0 |
| St. Patrick Catholic School | Dallas | Private school | PK–8 | 0 |
| St. Patrick School | Corpus Christi | Private school | PK–6 | 0 |
| St. Paul Catholic Classical School | Richardson | Private school | PK–8 | 0 |
| St. Paul Christian School | Plano | Private school | PK–K | 0 |
| St. Paul Lutheran School | Thorndale | Private school | PK–8 | 0 |
| St. Paul Lutheran School | Vernon | Private school | PK–K | 0 |
| St. Paul Lutheran School | McAllen | Private school | PK–8 | 0 |
| St. Paul Lutheran School | Fort Worth | Private school | PK–8 | 0 |
| St. Paul Lutheran School | Bishop | Private school | K–4 | 0 |
| St. Paul Lutheran Serbin School | Giddings | Private school | K–8 | 0 |
| St. Pauls Christian Day School | Brenham | Private school | PK–6 | 0 |
| St. Pauls Episcopal Day School | Waco | Private school | PK–6 | 0 |
| St. Paul's Episcopal Montessori School | San Antonio | Private school | PK–6 | 0 |
| St. Pauls Episcopal Montessori School | San Antonio | Private school | PK–5 | 0 |
| St. Paul's Episcopal School | Woodville | Private school | PK–5 | 0 |
| St. Paul's Preparatory Academy | Arlington | Private school | PK–12 | 0 |
| St. Paul's School | Houston | Private school | PK–K | 0 |
| St. Peter Prince Of The Apostles School | San Antonio | Private school | PK–8 | 0 |
| St. Peter The Apostle Catholic Classical School | Fort Worth | Private school | PK–8 | 0 |
| St. Peter's Classical School | Fort Worth | Private school | PK–12 | 0 |
| St. Peter's Episcopal School | Kerrville | Private school | PK–K | 0 |
| St. Philip & St. Augustine Catholic Academy | Dallas | Private school | PK–8 | 0 |
| St. Philip The Apostle Catholic School | El Campo | Private school | PK–8 | 0 |
| ST PHILIP'S EARLY COLLEGE H S | SAN ANTONIO | Public school | 9–12 | 0 |
| St. Philips Episcopal School | Beeville | Private school | PK–6 | 0 |
| St. Philip's Episcopal School | Uvalde | Private school | PK–4 | 0 |