In a research,what do you do if a child withdraw and a child says she'll be absent for five classes?

Question

In a research,what do you do if a child withdraw and a child says she'll be absent for five classes?

Answer 1

Do you mean if a child refuses to go to class? Is that what you mean?

Answer 2

call the parents... tell the principle... don't know really what you are asking...

is it for a trip, maybe family emergency...

Answer 3

You can keep them in the study but basically write it off because they will be different than any of the other subjects and it damages your validity.