Me again,
First, here where I live, parent-pick-up always get dismissed first!!!! The parents are all lined up in the lanes waiting long before the bell rings. I cannot see how most schools do it any other way. These are non-working parents who are waiting for their kids. Why make them wait so that buses with lots of latchkey kids get home first?
Second, children are NOT allowed to walk, for safety reasons. What happens after a parent picks them up is not the schools concern. I think that the OP should simply pick up her children after school.
Third, I am the one who coined the term 'hostage' Let me tell you why. The prev. poster is correct. Teachers would NEVER fall for remaining in their classroom working and being responsible for kids for an extra hour every day. Not in their contract. The kids are corralled in the gym. The teachers are not required to be present) I always said that the people in this rural county think you handle kids the way you do cattle. (principal was actually a farmer) That is not education, that is crowd control. And, it is true that being confined 'corralled' somewhere and not being allowed to leave is the definition of the word 'hostage'.
And, I am also the one who used the word 'advocate'. I was advising the OP to be an advocate for maintaining crossing guards!!!!! (not a bunch of legal parents-rights BS) NO way should any young child be allowed to walk home at all if there are no crossing guards and school staff on duty.
To the OP, I am sorry that you are angry. But, everyone here is right. Many schools will not allow children to leave school grounds unnattended. That is just a fact of life. I would not want my DS walking two blocks every day by himself. Heck, his bus stop is up the street. About one block... I usually pick him up at the bus stop!