According to the UK government, any child who misses more than 10% of school is “persistently absent” from school. Alarming news headlines inform us that this “persistent absence” is now at record rates of 20%. As a parent and a social philosopher interested in the topics of illness and disability, I find the guidance more worrying than these numbers.

Schools in the UK usually provide 190 days of instruction a year. Missing 10% or 19 days means missing just under 4 weeks of school. We have to remember, however, that these 190 days are not distributed randomly over the year. During the summer, when the number of contagious illnesses is lowest, there is a long break from school. The guidance does not differentiate according to age either. Schooling is compulsory between the ages of 5 and 18, which means children usually start school at age 4. While a 14 year old might be able to go to school with even a relatively bad cold, a 4 year old (or 7 year old) will not be able to do so. Small children delight in close proximity to each other – hence they are likely to pick up both head lice and viral illnesses more quickly from each other too than adults would. They are also likely to do things which result in injuries like broken bones. As a result they are likely to be ill more often. Family size also matters. According to a study conducted in 2009, families with one child had a respiratory viral infection in the household about a third of the time, but this rocketed to more than half the time for families with two or more children. By contrast, families with only adults had viral infections in the household only 7% of the time. Children are simply ill a lot. It is easy for them to miss two weeks of school between September and February, when schools start internal procedures to tackle “pesistent absence” half-way through the school year.