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Assuming equal distribution of families among these two increasing and decreasing classes we expect that, half of families (51 out of 102 for model #2) will exhibit an increasing pattern and another half will decrease in size.
Our findings are in agreement with the study from Malone et al. [ 27] which identified three trajectories that, when considering children from middle childhood until early adolescence, included increasing and decreasing classes.
Similar(58)
"Research suggests it may be better for students if we invest in increasing the quality of teachers, including through salaries, than on decreasing class size," says Albiser. "The quality of an education system cannot exceed the quality of its teachers".
(One that does seem to work is decreasing class size in the lower grades — but the size has to fall by a lot, more than is practical for most school systems).
Ravitch would like to see Duncan devote the resources at his disposal not to free-market experimentation but to "common-sense, real-world things," like enriching curricula, decreasing class sizes, maintaining school buildings, improving (rather than closing) low-performing schools, and working with social-service agencies to make sure schoolchildren are healthy enough to learn.
Decreasing class values drop also in thiscase.
For the Decreasing class the attention values startdropping instead.
We also know that decreasing class size results in an increase in the demand for teachers.
Furthermore, decreasing class size would require more teacher positions to be filled, and could lower average teacher quality in the process.
There are no data yet on the effects of the recession on measures of inequality, but historically the effect of downturns is to increase, not decrease, class polarization.
A coalition of groups has joined the New York City teachers' union in calling for a ballot initiative that would require the Education Department to decrease class size throughout the school system.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com