Every year, O.B Montessori Center stages a play or a musical, usually based on well-loved fairy tales and Broadway plays with participants from among the students aged 3–18 years. The gala affairs are often attended by national leaders, members of the diplomatic corps, entertainment personalities and well known socialites. Their common observation is that OBMCI students perform like "professionals". Funds raised are used for the O.B Montessori Twin Project of Pagsasarili Preschools and Mothercraft Training and Literacy Course for Village Mothers.