Given the exceptional impact among initial AP-TIP IN cohorts and its long-term investment in young talent in the state of Indiana, the Indiana Advanced Placement Teacher Investment Program (AP-TIP IN) received funding support from the Lilly Endowment to further develop and expand AP-TIP IN’s program in Indiana, and provide time to implement a longitudinal sustainability plan. This plan consists of four concurrent components: (1) implement the AP-TIP IN program in new schools; (2) communicate results to stakeholders and the public; (3) obtain governmental agency support; and (4) develop partnerships. This comprehensive strategy will result in a fully-supported program that fosters STEM-focused, college and career readiness program at Indiana schools through public-private partnerships.