The statute now requires twelve drills be conducted each school year, four of which must be lock-down drills, the remaining eight are required to be evacuation drills. The date to complete the first eight drills has been changed to December 31.
The first eight drills should be some combination of the two types of drills, however the legislation does not specify the combination.
The following PDF contains the full section of the law as it is posted on the New York State Legislature web-site. Education Law 807.pdf