St. John's Junior School is situated in Michael St. in St. John's Parish in Kilkenny city.

There are presently 200 children on roll, and the staff consists of the principal, Ms Mary O'Neill and sixteen teaching staff. The school shares a Home/School Liaison Teacher with St. John's Senior School, and employs three Special Needs Assistants. The staff also includes a Secretary and a Caretaker.

In addition to the normal academic programme the school also provides tuition in gymnastics, swimming, choir, violin, recorder, and GAA skills.

Principal: Mary O’Neill