As a state-integrated school, the proprietors of Sacred Heart College charge compulsory attendance dues to cover capital costs. For the 2025 school year, the attendance dues payable is $1,147 per year per student. As of , Sacred Heart College has a roll of students, of which (%) identify as Māori. As of , the school has an
Equity Index of , placing it amongst schools whose students have socioeconomic barriers to achievement (roughly equivalent to deciles 6 and 7 under the former
socio-economic decile system). ==Notable alumnae==