Real Estate agents tend to talk a lot of crap when answering this question (i.e. 'all' neighborhoods are good...wtf?) Most of them don't want to be pegged as racists or whatever because they have the ERA people breathing down their necks. Seldom will you hear an agent say 'this area is full of illegal aliens and single moms'. For acurate, albeit dated information, head over to http://www.census.gov
and map areas according to educational attainment, per capita income, housing prices, etc. THEN ask an agent how things have changed since the last decenial census. Like many cities with magnet schools, the best schools aren't always in the best areas. El Paso is also predominantly Catholic and a lot of parents send their kids to Catholic schools.