New Horror Story Outline.

I only have a very vague idea for the topic right now:

blood oozing out of the sinks as student do their chem labs. The chem teacher told the students that this is just the chemicals changing color due to their mixing of the chemicals...buh one smarty/ chem freak tells his/her best friend later that the teacher is lying becuz he/she knows that these chemicals don't produce such realistic blood red color. So these two set out for a investigation, and this leads to a huge discovery of what had happened to their high school in the past.