St. John's School is a coeducational, independent K–12 day school in Houston, Texas, United States. The School was founded in 1946 and is a member of the Houston Area Independent Schools, the Independent Schools Association of the Southwest (ISAS), and the Southwest Preparatory Conference (SPC). Though situated adjacent to St. John the Divine church, St. John's claims no religious affiliation. For the 2024-2025 school year, tuition ranges from approximately $29,000 to $35,000.