76111
From 1867 to 1868 he taught at the Dorotheenstädtische Realgymnasium , then at the Luisenstädtische Realschule until 1875 .
 Realschule
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Realschule