Sarah Perez Silverman

A 5th grade teacher at Toland Way Elementary in 2008

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

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

  • Least effective 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.
  • Least effective in English. Students of teachers in this category, on average, lost about 7 percentile points on the California Standards Test compared with other students at their grade level.

Perez Silverman's LAUSD teaching history

2002-03 through 2008-09 academic years

Sarah Perez Silverman's Response:

(1) These were my first years as a teacher, so there was a learning curve. In more recent years my students' scores have shown much more growth than they did in the years reflected in this article, because I have grown as a teacher. (2) In my 8 years of teaching I have taught 5 grade levels, including a combination class. This is a common problem among many of the newer LAUSD teachers and something that should be addressed. (3) I have moved to a school with a very supportive administration that has supported me as a teacher in ways I was not supported early in my career. I hope that the LA Times plans to research and publish articles relating to administrators' effects on schools. (4) The LA Times website claims that, "Research has repeatedly found that teachers are the single most important school-related factor in a child’s education." While this may be true, school is not the only factor in a child's life and education that affects her or his scores. Degree of English proficiency, and more importantly the child's home environment and background, have a huge affect on performance. I feel that singling us out by name is putting an unfair amount of pressure on us by saying that it's our teaching that is causing students to either succeed or fail, when in fact it is a wide variety of factors. (5) There are about a million other factors that need to be discussed, and I think that while this is a very worthwhile conversation to have, comparing teachers' scores is not the way to do it. (For example, if I followed a strong teacher, my students would appear to have gone down in their scores, making me look like a less effective teacher. If I followed a weak teacher, my job in raising kids' scores would have been extremely easy because their previous year's scores would have been low.)

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.

Do the ratings in this database reflect your experience or your child's experience in the teacher's classroom? Do you believe this is a helpful tool for parents?
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Los Angeles Teacher Ratings, the Los Angeles Times' database of value-added scores for Los Angeles Unified elementary schools and teachers.
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About the Data Desk

This page was created by the Data Desk, a team of reporters and Web developers at The Times.