Space them out PLEASE

In my classes, whenever I have one test, I have three. It seems as if teachers conspire to put big tests and papers all on the same day. For instance, last Thursday I had two tests and a paper. It was planned for me to have three, but luckily, one of the professors had to be off campus that day. I know that professors probably don't do this on purpose and that certain dates are just considered because the teacher believes that enough material has been covered to test, but man it can be rough on a student.