Is it a "temporary absence", or are you permanently apart? That is a fact-and-circumstances question, so you need to analyze what the answer is. If you are permanently apart, why does the school think it is temporary?
<a rel="nofollow" target="_blank" href="
https://www.irs.gov/publications/p501#en_US_2016_publink1000220780">https://www.irs.gov/publications...>
<a rel="nofollow" target="_blank" href="
https://www.irs.gov/publications/p501#en_US_2016_publink1000220818">https://www.irs.gov/publications...>
