Consider a data structure where "header" rows supply ID values (school
and grade in the example below) that are not captured in subsequent rows
....
 
df <- read.table(textConnection("
school grade studentid score
101 5 NA NA
NA NA 123 21
NA NA 124 25 
201 6 NA NA
NA NA 231 33"), header=TRUE)
closeAllConnections()
 
How do I capture the missing values for school and grade?
 
Art

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Art Burke

Associate, Evaluation Program

Education Northwest

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