California has a very high mobility rate.
In theory, you can have absolute mobility rate of 100%.
The high mobility rate for Asian-Americans is partly about immigration.
"But at Robert Treat Academy, we have only a 2percentt mobility rate among Puerto Rican students," he said proudly.
In a city where the mobility rate is high, this poses a particular problem to those children who move from school to school.
Between September 1998 and July 1999, not one child left the school, Mr. Atkins said, adding, "A zero percent mobility rate is highly unusual".
The principal, Pless Dickerson, said the mobility rate in the high school from September to June last year was 40percentt.
The school still has a very high mobility rate, meaning it has a large fraction of poor students and produces excellent financial outcomes for them.
In its report Wednesday, the Census Bureau said that Americans' mobility rate, which has been declining for decades, fell to 11.9percentt in 2008, down from 13.2percentthehe year before and setting a post-World War II record low.
In Trenton, where some schools have a student mobility rate of more than 50percentt, district officials hope to trace the effect of frequent moves on academic performance, once they build up their two-year-old data warehouse.
On the basis of the seven classes of the National Statistics Socio-Economic Classificathis, total"total" mobility rate works out at around 80%. But, where change is apparent is in the upward and downward components of the total rate.
