As we are faithful followers of American novelties, the great sack of the grammar system took place here as well. Half way down the seventies.
Same thing, same complaints. University students unable to write a clear article and teachers not knowing the rules themselves.

We have a yearly national dictation contest on TV (the Grand Dictation of Dutch language) between Dutch and Flemisch- Belgian pariticipants which is practically always won by the Belgians. (who stayed more conservative in their education system)

Watchers of the program can join in at home.
I's fun to participate, not easy, very fast . All reading signs count.
It's about 30 lines long and the avarage failure rate on spellng and reading signs sits around 30. The big Winner mostly had one or two mistakes.

I hope we too will find a repair for two generations lost in grammar
limbo.