Falcon Aviation Academy wants me to get my both FOI written and Flight Instructor Airplane written before I start training for CFI. They said I do not need an endorsement to take these tests, but when looking at 61.183 it states "Receive a logbook endorsement from an authorized instructor on the fundamentals of instructing listed in 91.185 of this part appropriate to the required knowledge test." Or is this just stating that I need to just get an endorsement for the Fundamentles of Instructing portion of the aeronautical knowledge? Oh and my friend received an endorsement for his FOI written.