Even long after leaving school, memories of school are one which we remember most.
Is it because we had good time there or because that is the place which makes or breaks our life. Whatever we became - Good or Bad, Successful or Failure, mostly depends on the school time.
That first day in school - for some it would have been separation from familiar territory of home, familiar face of parents/ siblings and stepping in the real world -sometime bad and sometime good. Some of us cries for what we leave behind and some of us are excited to find what we are going to get. Some are lucky to get great teacher and class mate who build our relationship whereas some feel unlucky for getting those strict teacher (though later in life we realize how good that was but that is too late to appreciate that moment). Also we come to true facets of life with those bully classmate without fall back of parent protection. But whatever it is those are memories which get inked in our life forever. For me, more than 50% of my dreams (those I get during my sleep and not one which I plan) have some or other linkage to school time.