Here is the screen shot of my Model. It selects 3 different school using the Iterator tool from the Parcel layer and creates a 3 mile buffer around each of the 3 schools and save them as School1_Buffer, School2_Buffer, & School3_Buffer. So this model works as expected!
However, I want to find the common areas among those 3 school buffer (School1_Buffer, School2_Buffer, & School3_Buffer). How can I use the Intersect tool in the model to create an intersect among those 3 buffers?