High School was granted a certificate of accreditation for three years. It underwent its second formal visit last November 20–21, 1995 and was again granted an accreditation status for five (5) years. The Second Re-Accreditation Visit was scheduled on January 29–30, 2001 granting the school again an accreditation status for another five (5) years. The Grade School Department passed the First Re-Accreditation Visit on February 17–18, 2000 and also the High School Department passed the Second Re-Accreditation Visit. Both departments were granted a Five-year accredited status (Level II) by PAASCU. 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. A growing need for the distinctive identification of the institution from another Notre Dame school in the locality inspired another change in its title. In May 2004, and in accordance with the move of all other Dominican Notre Dame schools in Mindanao, the school’s name was officially changed to Notre Dame-Siena School of Marbel (ND-SSM). The school applied for PAASCU accreditation for Basic Education and visited by the PAASCU Team on September 19–20, 2005. It was granted another Five-year accredited status (Level II) by the PAASCU. The school took on a new official name approved by the Securities and Exchange Commission (SEC) Article Registry No. 88313. Effective March 5, 2004, then Notre Dame of Marbel (NDM) had officially become Notre Dame-Siena School of Marbel (ND-SSM). ND-SSM, took a step to a distinct identity away from the shadows of the neighboring schools. The ND-SSM Personnel have their own big share of graces. The Board of Trustees granted ten percent (10%) increase in tuition and miscellaneous in SY 2007-2008. By this, the school faculty and staff enjoyed an increase in salary. The pre-school year workshop and in-service training were conducted every year by the management for teachers and staff to fresh set of ideas and to enhance not only their classroom instruction but basically