diff --git a/assignments/nbproject/README.md b/assignments/nbproject/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..3a9a00a86b26bd3c94208567dbc9fd73621f1465
--- /dev/null
+++ b/assignments/nbproject/README.md
@@ -0,0 +1,2 @@
+The nbproject directory holds [Netbeans](https://netbeans.org) project information.
+Students don't need to modify anything here.
diff --git a/examples/nbproject/README.md b/examples/nbproject/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..3a9a00a86b26bd3c94208567dbc9fd73621f1465
--- /dev/null
+++ b/examples/nbproject/README.md
@@ -0,0 +1,2 @@
+The nbproject directory holds [Netbeans](https://netbeans.org) project information.
+Students don't need to modify anything here.
diff --git a/nbproject/README.md b/nbproject/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..3a9a00a86b26bd3c94208567dbc9fd73621f1465
--- /dev/null
+++ b/nbproject/README.md
@@ -0,0 +1,2 @@
+The nbproject directory holds [Netbeans](https://netbeans.org) project information.
+Students don't need to modify anything here.