In her spotless white shoes, blue and tan uniform and pink backpack, Rachel Brown, 8, peered down S. 3rd Street in downtown Minneapolis at several approaching school buses Tuesday morning.
As 8:15 a.m. turned to 8:30 a.m. and then 8:45 a.m., the third-grader's smile disappeared as she began to worry.
"Our bus should have been here," she said to her mom.
Finally, it pulled up -- two hours late -- in front of Rachel's home, a 100-room shelter called People Serving People.
As Twin Cities area schools opened their doors, Rachel's journey back to class was a reminder that a growing number of students don't have permanent homes.
In Minneapolis, teachers have recently been trained to watch for students who hoard food or wear the same outfit for several days, both signs of homelessness.
"There are too many [homeless] kids to deny that this is real," said Elizabeth Hinz, Minneapolis public schools' liaison to homeless and highly mobile students.
Minneapolis estimates that about 5,500 of its 35,000 students -- about one out of six -- are homeless or lack permanent housing at some point during the school year.