The best thing to do is check the current rental prices in the area. If you are concerned about an area, your Realtor should not be telling you that a certain area is a better than another area. As a potential buyer you should check with the ploice dept. to see if there have been many crimes in that area. If you are interested in schools, you should check out http://www.greatschools.org.
Once again a Realtor should not be talking to you about what school systems are good or bad.
If a Realtor is mentioning any of these items it is unethical.
Use the web as much as possible. Do birdsyeye views, do aerial views, etc. Use google street view!! There are so many choices for you out there. If you need any more help feel free to call me 860-985-5816. There is no pressure for free advice!!