Realtors need to be careful when voicing opinions on schools, as there has been much attention lately on how this can violate fair housing laws. When a Realtor has direct experience w/ a school, such as their children attend there, it is certainly OK to share that. A recent study determined that some Realtors were steering based upon good schools and schools that were not good.
Providing sources of data for consumers is always an option that keeps our repsonses from being interpretted as steering.
The sites that I always recommend are