This study aims to deeply analyze parents' experiences of school education participation based on Judith Butler's theory of Subjectivation, and to explore the ambivalent meanings of subjection and resistance embedded within that process. To achieve this, we conducted focus group interviews with parents of elementary school students to qualitatively analyze the deep-seated meaning structures of their participation experiences. The findings reveal that parents experience multi-layered conflicts as they navigate between heterogeneous identities such as educational consumers, school assistant, and subjects of civic rights. In particular, the division between their public duty as a parental subject and their private duty as a maternal subject acted as a primary source of tension in their participation. Analyzing this as a process of Subjectivation, we found that parental participation is driven by a 'passionate attachment' to be recognized as a "good parent." Paradoxically, however, this also constitutes a process of subjection where parents willingly submit themselves to the norm of "appropriate participation" required by the school. However, subjection is not the full picture of Subjectivation. Parents also engaged in counter-practices to reconstruct their own subjectivity through micro-resistances, such as creatively appropriating existing norms, critically questioning them, and forming solidarity with other parents. In conclusion, this study reveals that the Subjectivation of parents is not a linear progression but a non-linear process of becoming, where attachment, conflict, subjection, and resistance intersect. Based on this, we propose a critical re-evaluation of parental participation policies.