Vertaling van "has become apparent that many pupils and teachers know precious little about " (Engels → Frans) :

In connection with Europe Day (9 May), it has become apparent that many pupils and teachers know precious little about the European Union and its history, institutions and achievements.
La journée de l’Europe, ce 9 mai, est l’occasion de constater que bien des étudiants et enseignants n’ont malheureusement qu’une connaissance lacunaire de l’Union européenne, de son histoire, de ses institutions et de ses réalisations.