It is a part of the Roman Catholic Diocese of Youngstown .
Saint John previously was the local Catholic high school in Ashtabula County , but as part of restructuring and growth in mission , now includes all elementary and high school grades .
Saint John is a part of the Roman Catholic Diocese of Youngstown .
Saint John previously was the local Catholic high school in Ashtabula County , but as part of restructuring and growth in mission , now includes all elementary and high school grades .