聖母
On November 21–22, 2003, the OP-Siena Golden Presence in Mindanao (Mindanao OP-Siena 50th Anniversary) was celebrated in Notre Dame of Marbel with the participation of other OP Siena Schools: Notre Dame of General Santos City, Notre Dame of Polomolok, Notre Dame of Lagao, Notre Dame of Tacurong for Girls, Notre Dame of Tulunan, Notre Dame of Jolo and Notre Dame of Cotabato. Life size statue of Mother Francisca Del Espiritu Santo and of St. Catherine of Siena were erected to mark the celebration. A portrait and canvas of the Foundress of the OP Siena Sisters was also unveiled.