In Germany, what should be taught is regulated in what is called Lehrplänen or Bildungspläne. These are different for each state and type of school, and they change over time. Additionally, teachers have some autonomy on what they will teach, so even when a topic is not mentioned, it could still be taught.
Most plans focus on teaching methodology and competency. The actual topics that should be covered are often only described by short keywords. Berlin (Oberstufe) and Hamburg for example only mention the 2. World War and the Holocaust, but no details.
Some states do mention crimes of the wehrmacht though:
In den Bundesländern Bayern, Hessen, Niedersachsen (»Verbrechen der Wehrmacht«) und Sachsen-Anhalt (»Rolle von Einsatzgruppen und Wehrmacht«) wird die Rolle der Wehrmacht in kritischer Weise in den Lehrplänen benannt.
My translation: The role of the wehrmacht is mentioned critically in the curriculum of the states Bavaria, Hesse, Lower Saxony ("Crimes of the Wehrmacht") and Saxony-Anhalt ("The Role of the Einsatzgruppen and Wehrmacht").
Looking at school books, there are some that mention the crimes of the Wehrmacht, and there are others which neglect to mention the Wehrmachts involvement in the Holocaust and downplay its war crimes.
Historically, the state of school books was a lot worse until the 90s:
Schulbuchdarstellungen [boten] bis in die 1990er Jahre kein angemessenes Bild von der Mitverantwortung der Wehrmacht für Kriegsverbrechen und Völkermord [...].
by translation: Up until the 90s, school books did not create an accurate picture of the responsibility of the Wehrmacht regarding war crimes and genocide.
The source goes on citing the work of Dieter Gebhard, Hans-Heinrich Nolte, Bodo von Borries, and Wigbert Benz.
Outside of Schools
A traveling exhibition called Wehrmachtsausstellung informed about crimes of the Wehrmacht from 1995 to 1999 and 2001 to 2004.
Wikipedia says that this exhibition was what first introduced the broad public to the issue. There has been considerable controversy about it, especially the political right from CDU to NPD attacked the exhibition for displaying the Wehrmacht in a negative light.