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the class is closed for a fixed duration ("targeted class closure" strategy); the class and the other class of the same grade are both closed for a fixed duration ("targeted grade closure" strategy); the entire school is closed for a fixed duration ("whole school closure" strategy).
To participate in this study schools had to commit for a period of 4 years, have a minimum of 57 students in each of the targeted grade levels, and guarantee that no new textbooks or curricula would be introduced.
Figure 1 shows the effect of closure duration for the targeted class and targeted grade strategies at a fixed closure-triggering threshold of 3 symptomatic cases.
Second, targeted grade closure has in all cases a much lighter burden, in terms of lost class days, than whole-school closure.
The targeted class closure strategy already yields a large reduction of the epidemic peak, and this reduction is only slightly improved by the targeted grade closure and whole school closure strategies (for the same closure durations).
In particular, for small closuretriggering thresholds the targeted class and targeted grade strategies yield reductions in the number of large outbreaks that are similar to those observed for the closure of the whole school.
Similar(51)
When I spoke to one furious mother whose son was arrested and kicked in the scrotum during the raid, she was holding up a copy of that Daily News article and calling out Weichselbaum for targeting grade school kids with her so-called journalism (watch the video).
For elementary school students, the AnimalWatch by Arroyo and Woolf (2003) targeted fifth grade students, and Monsakun by Hirashima et al. (2008) was used by second grade students.
First, he targeted the Grade One Frizette Stakes on dirt at Belmont Park, where Nemoralia was a very creditable runner-up.
That same study found that suicide attempt rates rose steeply at age 12, so iFred initially targeted fifth grade students to reach them before what can be a challenging developmental time.
Most of the students were in the grades targeted for the module: grades 9 and 10 (Grade 9, 31%; Grade 10, 41%; Grade 11, 14%, Grade 12, 6%).
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com