Gregg Marion Ridenour

A 5th grade teacher at Plummer Elementary in 2006

These graphs show a teacher's "value-added" rating based on his or her students' progress on the California Standards Tests in math and English. The Times’ analysis used all valid student scores available for this teacher from the 2002-03 through 2008-09 academic years. The value-added scores reflect a teacher's effectiveness at raising standardized test scores and, as such, capture only one aspect of a teacher's work.

Overall value-added effectiveness

Math effectiveness

English effectiveness

This chart shows where teachers in this effectiveness category fall on a distribution of all teachers’ scores.

Compared with other Los Angeles Unified teachers on the value-added measure of test score improvement, Ridenour ranked:

Less effective than average overall.
Less effective than average in math. Students of teachers in this category, on average, lost about 4 percentile points on the California Standards Test compared with other students at their grade level.
Less effective than average in English. Students of teachers in this category, on average, lost about 3 percentile points on the California Standards Test compared with other students at their grade level.

Ridenour's LAUSD teaching history

2002-03 through 2008-09 academic years

Plummer Elementary, 2006 - 2003

Gregg Ridenour's Response:

Just wondering, how did you pick the years to evaluate? I was in the classroom during 2002 to 2006 and an out of classroom Coordinator 2006 to present. The above years shown do not reflex my total in classroom time and includes a year I was out of the classroom.

The Times gave LAUSD elementary school teachers rated in this database the opportunity to preview their value-added evaluations and publicly respond. Some issues raised by teachers may be addressed in the FAQ. Teachers who have not commented may do so by contacting The Times.