Tennessee Investment in Student Achievement (TISA) - As enacted, requires the TISA review committee to study and include in its annual report recommendations for how this state may revise the ways in which it identifies economically disadvantaged students to ensure this state is accurately identifying the students in need of additional resources and recommendations for how this state may better support economically disadvantaged students through the TISA. - Amends TCA Title 49, Chapter 1 and Title 49, Chapter 3.

SB 2385 updates Tennessee's definition of "economically disadvantaged" students for school funding. It expands eligibility to include students directly certified for free meals (without household applications) and those from households receiving Medicaid, SNAP, TANF, or FDPIR benefits. The bill requires the state to allocate additional funds to school districts if their funding decreases due to this expanded definition, ensuring they receive at least the same weighted allocation as the prior year. It also mandates the state to seek a federal ESSA plan amendment to reflect this updated definition, effective for the 2027-2028 school year.