Military Children's School Investment Act

Military Children’s School Investment Act - Amends the Impact Aid program (which compensates local educational agencies (LEAs) for the financial burden of federal activities affecting their areas) of the Elementary and Secondary Education Act of 1965 to authorize the Secretary of Education to award grants to LEAs that: (1) were eligible for Impact Aid in the prior fiscal year due to federally-connected children; and (2) are experiencing an enrollment increase of at least 250 or 10% consisting of certain federally-connected children whose arrival is due to military base closures and realignments or global rebasing, force structure changes or reductions, or actions initiated by the Secretary of Defense.

Requires such grants to be used: (1) to construct new schools or expand existing schools to accommodate the influx of students; (2) repair or upgrade academic facilities; or (3) lease, with the Secretary's approval, buildings or portions of buildings from a private entity for additional school space.