I interrogate the Philippine Indigenous Peoples Education's operational construct of culture to explicate its indigenous knowledge systems and practices (IKSP) integration into the K-12 curriculum. Pragmatism as a philosophical framework mainly guides the argument in this paper. In the first part, I introduce the old and contemporary meanings of culture and point out flaws in the IKSP integration. Literature backing the essence of IKSP integration into the school curriculum dominated by the Western knowledge system is discussed in the second part, followed by a discussion on culture and indigeneity that nuance further the IKSP integration in public education. The Philippine Indigenous Peoples Education is presented next, highlighting its definition of IPs, focus areas, support systems, and recent developments, ending with a critique. Analysis and discussion follow. The paper concludes with a challenge, especially for the education sectors, to reframe their lenses at looking at culture to build authentic relationships with indigenous communities and provide indigenous learners with an education that is need-based and culture-sensitive, one that respects their worldviews, knowledge systems, heritages, and identities, one that is truly liberating. Providing IPs an education responsive to the changing society can help them achieve a real sense of self-determination for social progress.