(i) children who won't get up for school and miss buses, then turn up home so that Mum can rescue them (which eats into writing time!) -- Sir Talkalot
(ii) children who have 1 1/2 days off school and insist for 1 1/4 of those that they have no homework, then discover that in fact they have an essay due tomorrow, which they haven't started, plus a major French test on regular and irregular verb conjugations in six different tenses -- Princess Sleepyhead
(iii) children who have parent-teacher interviews and lose their schedule of interview times, so that parents don't know when said interviews are -- Sir Talkalot
(iv) children who throw paint at their siblings when their siblings are in full school uniform -- Princess Sleepyhead
(v) children who turn up after school with unannounced friends (when there is an activity that they have to go to) -- Princess Sleepyhead (who hardly ever has friends home)
That was today. I'm sure tomorrow it will be a different five.