It is premature to attribute gains in kindergarten readiness to basing pre-K on the common core curriculum introduced two years ago ("City's revamped pre-K showing promise," April 27).
Contrary to The Sun's report, the rise in readiness scores was not "unprecedented." Examination of the data available from a recent Baltimore City Public Schools press release shows that the 4 percent gain seen from 2011 to 2012 is part of a general trend of increased readiness in test scores since 2007 for all children entering kindergarten in Baltimore, whether enrolled in common core aligned pre-K or not.
In fact, most of the gains in non-common-core-aligned pre-K programs were larger than those seen in common-core pre-K programs.
The writer is professor emeritus of education at the University of Southern California Los Angeles.