How many schools with the highest level of poverty have received a portion of a donation included corporate sponsored gift card?
highest level of poverty refers to poverty_level = 'highest'; received a portion of a donation included corporate sponsored gift card refers to payment_included_campaign_gift_card = 't'
SELECT COUNT(T1.schoolid) FROM projects AS T1 INNER JOIN donations AS T2 ON T1.projectid = T2.projectid WHERE T2.payment_included_campaign_gift_card = 't' AND T1.poverty_level = 'highest poverty'