That’s exactly what it is. Germany never repealed this Nazi-era law.
This is a old American myth. The first law concerning the so called "Schulpflicht" was the "Principia regulativa" of King Friedrich Wilhelm I., (1717) in Prussia. This was approved by the "Generallandschulreglement" of Frederic the Great in 1763 (for Prussia) and followed i.e. by laws in 1802 (in Bavaria) or 1835 (in Saxonia). The law of 1938 just was in the line of a very old legal tradition and has nothing to do with nazism. It is indeed funny to me when some (not all!) people in America use nazism -without understanding anything of it- as their surrogate religion for everything they think it is evil.