Port Catholic School 446 N Johnson St, Port Washington, WI53074 Port Catholic School is an educational facility located on North Johnson Street in Port Washington. The school is a…More faith-based, Catholic parochial school for students in grades Pre-3 - 8th grade. The school offers on-site child care as well athletics, bus transportation, art programs and much more. The school offers numerous sports programs including volleyball and basketball for both boys and girls. Check the main site for details on programs or call for information on registration and rates.