diff --git a/index.md b/index.md
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--- a/index.md
+++ b/index.md
@@ -5,6 +5,7 @@ subtitle: >
 ---
 ## University
 
-- [Diskrete Mathematik](school/di-ma)
-- [Einführung in die Kryptographie](school/intro-crypto)
-- [Netzsicherheit 1](school/netsec1)
+- [Diskrete Mathematik](school/di-ma/index)
+- [Einführung in die Kryptographie](school/intro-crypto/index)
+- [Netzsicherheit 1](school/netsec/index)
+- [Allgemeine Elektrotechnik 1](school/alg-etechnik/index)
diff --git a/school/di-ma.md b/school/di-ma/index.md
similarity index 100%
rename from school/di-ma.md
rename to school/di-ma/index.md
diff --git a/school/intro-crypto.md b/school/intro-crypto/index.md
similarity index 100%
rename from school/intro-crypto.md
rename to school/intro-crypto/index.md
diff --git a/school/netsec1.md b/school/netsec/index.md
similarity index 100%
rename from school/netsec1.md
rename to school/netsec/index.md