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. HB2485 has been assigned Public Chapter Number 1032 by the Secretary of State.