The phrase "a selected schools" is not correct in English.
It should be "selected schools" or "a selected school" depending on the context. You can use it when referring to a specific group of schools that have been chosen for a particular purpose or program.
Example: "The program is only available to students from selected schools that meet the criteria."
Alternatives: "specific schools" or "chosen schools".
This means that they provide funds for implementation of the "School Without Violence" programme in a selected school which has applied for participation in the programme.
To keep the influence of school factors, other than urbanisation and deprivation, to a minimum, the selected schools were non-denominational local authority schools on mainland Scotland with an ethnic minority population of less than 10% of the school roll.
A total of 518 sixteen-year-old adolescents were selected from the selected schools class lists.
In the second stage of sampling, classes within the selected schools were selected randomly.
It is noted that a limitation of the evaluation methodology is that the sample frame was relatively small, but that the small sample enabled a thorough, in-depth investigation of the selected schools using a mixed-methods approach.
Despite this warning, however, alternative courses in commerce, agriculture, and technical subjects that were offered in a limited number of selected schools did not prove popular.
Within each of the selected schools, a random sample of 20 students and 15 teachers was chosen.
Saliva samples collected from a prior study of teenagers 14-155 years old) were derived from a convenience sample of selected schools within the Clark County, Nevada School District (CCSD; n=48); originally obtained for the purpose of surveying levels of oral cariogenic bacteria.
Selected schools were randomly selected through two levels, regions of Finland (Capital, South, Middle, North), and type of area (urban, sub-urban, rural) using proportion probably size.
At the second sampling stage, classes within the selected schools were randomly selected.
