What are the cement barriers that are being placed in front of t

At most elementary schools in the area the streets are wider to account for the extra parking so this is really a non issue and the explanation makes sense. People usually do not usually park that close to the side walk anyways but a car there could obstruct the view of a child.

These extended curbs are too extended. They put them about a foot away from curb to help water flow. If you see how many children cross at TWD and Lake Village Dr, with a crossing guard, maybe 10. Then they walk the street or across the lawns. As long as they get away from school property.