Is this a "switched neutral" situation?
You are right to be concerned about switched neutrals. A dangerous situation.

You can test it by using a non-contact tester similar to this one



Turn on the breaker (after making sure no terminals are touching anything metal). Check the wires going to each of the switches. If wired correctly, one of each should be hot.  If they are not, you have a switched neutral.

Hot should be labled black, red or blue. White wires are often used for hot on switch loops, but they are supposed to be labeld black with marker, paint or tape.

If you do find a switched neutral, you need to rewire the circuits. This may be a time to call in a pro. 

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