Do you see the effects of the war in today's San Salvador?
Of course; it would be impossible for any country to have a 12-year long civil war and not feel the effects for many years afterwards. San Salvador itself was relatively isolated from the country's conflict until the very end, so it never suffered much physical damage. There is part of a generation that grew up with the war, which creates its own social challenges. In many ways, the country seems to recognize how damaging the war was to their cultures and no one is interested in going back to that environment. Today's San Salvador is a busy, capital city in every way. 

What would my daily life be like?
Like in the U.S., your life would be what you make of it. San Salvador has good restaurants, grocery stores, movie theatres, health clubs, Blockbuster Video, and every other convenience of normal day to day living. The outward culture is very "pro-U.S." and the U.S. has exported much of its culture, good and bad, to the area. The easy access to beaches and lakes makes outdoor activity a primary social and recreational pastime. Social interaction is more "people oriented" than in the U.S.; visiting at houses is normal and expected, and having social contact with people you work with is common. San Salvador has full access to goods and services, so there is no difficulty to get key consumption items.

So how is living there different than the U.S.?
In general the same caveats apply: be aware of your surroundings, avoid certain parts of the city at night, etc. Life in El Salvador can be very comfortable and convenient, and learning a new culture and having an "international experience" is one of the advantages in working with Escuela Americana.

What are the most noticeable differences?
In terms of security, as in most of Latin America, one noticable difference between life in El Salvador and life in North America is that walls exist around most of the housing here. As such, the concept of "curb appeal" is non-existent in San Salvador, since the most you see from the street is a wall and a door. However, behind those walls are some very nice properties.

Security in general, is more visible throughout Latin America than in the United States. In reality, it is probably not greater, but it is less "high tech." For example, in the U.S., at an ATM there is a camera recording you. In San Salvador, an armed guard stands next to the machine. It is not uncommon to see armed security guards at gas stations, fast-food drive-throughs, and grocery stores, or to see security fences and barbed-wire surrounding houses and buildings. This sounds daunting at first, but in day-to-day life it becomes invisible and the statistics back this up. San Salvador has crime, just like any large city, but there is a lower violent crime rate than Atlanta, Detroit, or Dallas. Smaller crimes happen, but with the same precautions one would use in any metropolitan environment this risk can be minimized.