The concept of “period poverty” describes the lack of access to menstrual health education and menstrual care products. This quasi-experimental mixed-methods study evaluated a collaboration called Just 4U™ to address period poverty. This collaboration was formed between My Vital Cycles®, as the provider of educational content, and Modibodi®, as the provider of period pants as a reusable menstrual product (RMP). Five co-educational schools, including a regional school, participated and were of average to below-average socio-educational advantage ranking in Australia. The pre- and post-intervention evaluation with 63 postmenarcheal adolescents (14–18-year-old) in Grades 9–12 showed an improvement in their ovulatory menstrual health literacy. Open-ended questions explored their perspectives on the RMP. Overall, the RMP was well received by participants, who reported a positive impact on their mindset and cycle management. School staff (n = 6) who had observed delivery of Just 4U™ were interviewed. They believed the program had benefited the participants and recommended that teacher training would help the intervention to be sustainably implemented in schools. Findings highlight the worthwhile inclusion of RMPs alongside ovulatory menstrual health education. This study contributes to ongoing research in adolescent ovulatory menstrual health education.