Catholic Secondary Schools Where IHMs Serve
| Archbishop John Carroll High School | Radnor | PA | www.jcarroll.org | |
| Archbishop Prendergast High School | Drexel Hill | PA | www.prendie.com | |
| Archbishop Ryan High School | Philadelphia | PA | www.archbishopryan.com | |
| Bishop Denis O'Connell High School | Arlington | VA | www.bishopoconnell.org | |
| Bishop McDevitt High School | Harrisburg | PA | www.bishopmcdevitt.org | |
| Bishop Shanahan High School | Downingtown | PA | www.shanahan.org | |
| Cardinal Dougherty High School | Philadelphia | PA | www.cardinaldougherty.org | |
| Cardinal Gibbons High School | Raleigh | NC | www.chsnc.org | |
| Cardinal O'Hara High School | Springfield | PA | www.cohs.org | |
| Conwell-Egan Catholic High School | Fairless Hills | PA | www.conwell-egan.org | |
| John W. Hallahan High School | Philadelphia | PA | www.jwhallahan.org | |
| Immaculata High School | Somerville | NJ | www.immaculatahighschool.org | |
| Kennedy-Kenrick High School | Norristown | PA | www.kkchs.org | |
| Lancaster Catholic High School | Lancaster | PA | www.lchs-yes.org | |
| Little Flower High School | Philadelphia | PA | www.littleflowerhighschool.org | |
| Marian High School | Tamaqua | PA | www.mariancatholichs.org | |
| Monsignor Bonner High School | Upper Darby | PA | www.bonnerhigh.com | |
| Our Lady of Lourdes Academy | Miami | FL | www.olla.org | |
| Our Lady of Lourdes Regional HS | Coal Township | PA | www.lourdes.k12.pa.us | |
| St. Hubert High School | Philadelphia | PA | http://www.huberts.org | |
| St. Joseph High School | Hammonton | NJ | http://www.stjoek12.org | |
| Sts. John Neumann - Maria Goretti High School | Philadelphia | PA | www.neumanngoretti.org | |
| Trinity High School | Camp Hill | PA | www.trinityhs.k12.pa.us | |
| Villa Maria Academy | Malvern | PA | www.vmahs.org | |
| West Philadelphia Catholic High School | Philadelphia | PA | www.westcatholic.org |