Teacher Victims' Family Assistance Act of 2019 This bill requires the Department of Education to provide assistance to certain family members of elementary or secondary school staff members killed by an act of violence while performing school duties. Specifically, victims' families shall be provided with (1) funeral assistance; (2) a death benefit payment to the surviving spouse, dependent child, or other next of kin; (3) a monthly living allowance for the surviving spouse until death or remarriage and for each dependent child until age 18; and (4) undergraduate education assistance for each dependent child for five years. The bill exempts from income taxation wages of a elementary or secondary staff member killed by an act of violence while performing school duties earned in the year of death. It also increases the excise tax on shells and cartridges ammunition from 11% to 13%.