One teacher told KFOR she lay on top of six students in the bathroom.
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One teacher had found himself suspended because of a defamatory comment on Twitter, said Prof Phippen.
For residential visits, the government advises there be one teacher for every 10 pupils.
It provides, in theory, an anganwadi centre with one teacher and an assistant for every 1, 000 people.
It requires a much higher ratio of staff to pupils than usual, at one teacher per eight children.
One teacher thought it was folding chairs brought in for a concert falling to the ground like dominoes.
That said, one teacher, Imogene Hill, seemed to be able to deliver the goods for Jobs in 4th grade.
Critics in Texas have pointed out that their public school system has nearly one administrator for every one teacher.
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At NYC Gifted, the 90-minute class consists of 10 students and one teacher.
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One teacher has what she calls a "peace circle" each week where students can talk about anything that's bothering them.
Their union, the NASUWT, says one teacher was suspended after refusing to take a test, although this was lifted late on Wednesday.
Staff were soaked with water bombs, washing-up liquid was squirted into the eyes of one teacher, and the head's office was "trashed", she said.
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Columbine Principal Frank DeAngelis called for a moment of silence for the two students and one teacher -- Dave Sanders -- killed in the shooting.
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Best said about half of all U.S. public schools have at least one teacher who has posted a project on DonorsChoose.org since the site went live in 2000.
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She met with local authorities and teaching unions on Monday after concerns were raised that the Foundation Phase, which would need one teacher for every eight pupils, is underfunded.
It is part of a broader initiative, NYC21C, that began last year and looks for ways ways to educate students beyond the classic model of one teacher, one lesson and a 35-student classroom.
One teacher from a grammar school who contacted the BBC News website said he spent some time looking at "appallingly badly written personal statements with stupefyingly banal references to jobs in fish and chip shops or restaurants".
"In recognition of the increased resources needed to support teaching in some schools, over the past two school years, 14 schools in areas of greatest deprivation have each had their staffing formula increased by one teacher, " said Mr Leaver.
Today teachers at half of all the public schools in the nation have had at least one teacher post a project to DonorsChoose.org, whose supporters include board member Stephen Colbert, Oprah Winfrey and the Bill and Melinda Gates Foundation.
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About 10 percent of the students attend regular classes at those schools, with an aide to help them, but 90 percent are in special classes, with student-teacher ratios as small as 1-to-1 and as large as eight students with two aides and one teacher.
If one piano teacher has too many students, she might sluice the spillover to you.
Hobson told me of one such teacher, whose students included a hugely disruptive boy.
One head teacher said children with specific difficulties now concentrate more, read better, and their self-esteem has rocketed.
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This year there are 11 students, from kindergarten through fourth grade, one full-time teacher and one teaching aide.
One head teacher in Pembrokeshire described the conditions as "probably the worst" he had seen in 25 years.
Some children entering the education system in the UK do not even know their own name, according to one head teacher.
Children tend to opt for subjects which offer a better chance of high grades, says one chemistry teacher, who asked not to be named.
One head teacher told him she was passionate about her work in a school in a deprived area but feared that it would be "career suicide" for her to remain there.
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