Admission to St. John's is based on academic ability. The school is equal opportunity enroller. In order to be admitted to the school, students must follow the following procedures:
To graduate from St. John's, a student must meet certain requirements. They must complete a base amount of 22 credits (each class, scheduled on an annual basis, generally gives one credit). If they are part of the IB program, they must have at least a passing grade in their IB subjects to be able to graduate with their IB diploma.
Along with a prestigious academic program, St. John's also possesses a rigorous and highly successful athletics program. Using the mascot "Lions", the school competes regularly in the ISST (International School Sports Tournament) among others. Over the years St. John's has won top honors at the ISST's for Track and Field, Volleyball, Basketball. The school boasts a state of the art gymnasium called the Sports Arena. They also possess a newly refurbished soccer field that now also holds a Baseball Diamond. Teams usually compete on weekends and the school's rival school in athletics is mainly the International School of Brussels (ISB).
In Elementary school, students are encouraged to participate in numerous sports and can join school teams such as the Track and Field Team. Once in Middle School, the sports program becomes more competitive and the students can participate in all of the sports that the school has to offer. The Middle School teams are divided into the "A team" and the "B team". The High School Sports program is the most competitive and draws the most school spirit. In high school the teams are divided into JV and Varsity, and compete against schools from as far away as Cairo. It is the High School teams that compete in the ISST tournaments.
St. John's is especially noted for their 3 consecutive wins for Div. 1 ISST Varsity Boys Basketball in 2003, 2004, 2005.The team is led by coach Dennis Davis, a former NBA player for the Atlanta Hawks. Josh Davis, the coach's son, now plays for Yale University.
The boys' volleyball team recently made ISST history as being the only team in recent years to beat Cairo American College (CAC) in Div. 1 Varsity Boys' Volleyball. CAC had four consecutive wins from 2001 to 2004, and four wins from 1995 to 1999. In 2004, the Lions Div. 1 girls' varsity volleyball team won the school their first volleyball ISST's in 11 years.
In 2004, St. John's secured themselves another ISST win; a boys' varsity track and field ISST win. The scored a first place in the event, making it the school's second ISST win for anything in under a year.
In 2006, the St. John's softball team won the Div. 2 Softball ISST's.
The St. John's junior varsity teams also possess strong talent. In 2005, the JV boys' basketball (led by Richard Katherman, former player for the Houston Rockets) team won the JV tournament held at St. John's. In 2004, the team also won the JV tournament held at St. John's.