The National Animal Cruelty Investigations School has three different components that should be taken in order. Requests to take them out of order will be considered on a case-by-case basis. Each component consists of a five-day, 40-hour course conducted from 7:30 a.m. to 5:00 p.m. Monday through Friday (concluding some time in the afternoon, before 5:00, on Friday). Each course offers four continuing education units upon completion. After completion of all three components (120 hours), you will be a certified humane investigator.