Tennessee Investment in Student Achievement (TISA) - As introduced, creates a 3 percent weighted allocation for a student who resides in a school district with a membership between 1,001 and 1,250, both inclusive. - Amends TCA Title 49.

SB 637 (TISA) modifies Tennessee's education funding formula to add a 3% weighted allocation for students attending school districts with 1,001 to 1,250 students. This change directly affects small school districts in that specific size range by increasing state funding per student. The bill amends Tennessee Code Annotated, Title 49, by creating a new funding tier for these districts. The policy takes effect July 1, 2025.