Sailor boy in school??Friend or enemy?? We'll never know

During last summer my best friend Ashley and Iwent to our school, just to hang out, when we saw an image in one of the doorways. We went for a closer look and saw a little boy no older than 6 dressed in a sailor suit with a drop of blood on his cheek. We were SO scared we ran home and never looked back or went back-until school started- After about 2-3 months into school Ashley, me, and our friends were outside and blood started appearing on peoples clothes and shoes-for no reason- Ashley and I decided to tell them all the story about the ghost the past summer. Then Kirstin-one of our friends- told us that schools built before 1984 could be built over cemetaries. Adam-another friend-told us that he was in the library reading old newspapers from the year 1967-2-3 years after our school was built- a kid was murdered at his school halloween night while trick-or-treating in his sailors costume. Then we started seeing him in windows and doors of our school-in the little town of Franklin,Wisconsin- and all the houses around it. We all started having dreams about him and we think he puts them into our heads. We don't know if the sailor boy-as we now refer to him- wants to be friend or enemy. Till this day we still se images of him and sometimes we think -when we're just starting to forget- he likes to remind ! us he's still here by flashing lights on and off. I guess we'll never know anymore about him.