Blessed Trintiy Academy is supported by 6 parishes in the Allison Park/Glenshaw grouping and the Etna/Millvale/Glenshsaw grouping.  The following parishes support BTA:

(For parish websites and mass schedules, please click on the parishes)

Allison Park/ Glenshaw- Our Lady of Perpetual Help Parish
St. Mary of the Assumption Church- Glenshaw
2510 Middle Road
Glenshaw, PA 15116

St. Ursula Church- Allison Park
3937 Kirk Avenue
Allison Park, PA 15101

Etna/Glenshaw/Millvale- St. Matthews Parish
St. Bonaventure Church- Glenshaw
2001 Mount Royal Blvd
Glenshaw, PA 15116

All Saints Church- Etna
19 Wilson Street
Pittsburgh, PA 15223

Holy Spirit Church- Millvale
608 Farragut Street
Pittsburgh, PA 15209

St. Aloysius- Reserve
3616 Mt. Troy Road
Reserve Township, PA 15212