diff --git a/school/effort-estimation.py b/school/effort-estimation.py
new file mode 100644
index 0000000..9c2ff66
--- /dev/null
+++ b/school/effort-estimation.py
@@ -0,0 +1,49 @@
+import array
+import math
+
+# estimate based on:
+# P3D1:  240h ( 8 weeks, 30hrs) -> 200
+# P3D2:  300h (10 weeks, 30hrs) -> 250
+# P3D3:  240h ( 8 weeks, 30hrs) -> 200
+# P3D4:   60h ( 2 weeks, 30hrs) ->  50
+
+ph_est = 840
+#ph_est = 700 # if 25hrs instead of 30
+
+ph_perc = array.array('f', [0.15, 0.28, 0.42, 0.075, 0.175])
+baseline_mh = round(ph_est / ph_perc[2])
+
+def calculate_person_months(man_hours):
+    person_months = 114
+    return man_hours / person_months
+
+def ovza(person_months):
+    return math.sqrt(person_months) + 1
+
+print("Man-Hour baseline:    ", baseline_mh)
+
+total_mh = 0
+total_pm = 0
+total_ovza = 0
+
+man_hours = array.array("I")
+person_months = array.array("f")
+optimal_fte = array.array("f")
+
+for i in range(5):
+    man_hours.append(round(baseline_mh * ph_perc[i]))
+    total_mh += man_hours[i]
+    print("Phase", i+1, "Man-Hours:    ", man_hours[i])
+
+    person_months.append(calculate_person_months(baseline_mh * ph_perc[i]))
+    total_pm += person_months[i]
+    print("Phase", i+1, "Person-Months:", round(person_months[i],2))
+
+    optimal_fte.append(ovza(person_months[i]))
+    total_ovza += optimal_fte[i]
+    print("Phase", i+1, "OVZA         :", round(optimal_fte[i],1))
+    print("Phase", i+1, "WVZA?        :", round(ovza(optimal_fte[i]),1))
+
+print("Total Man-Hours:      ", total_mh)
+print("Total Person-Months:  ", round(total_pm,2))
+print("Total OVZA         :  ", round(total_ovza,1))
diff --git a/school/videos.csv b/school/videos.csv
new file mode 100644
index 0000000..9d8ec60
--- /dev/null
+++ b/school/videos.csv
@@ -0,0 +1,15 @@
+url,title
+https://tube.tugraz.at/portal/watch/b4a71a1a-4cfe-49c9-a685-9b788aac2eb3,"S05E05-Requirements in Agile Software Development"
+https://tube.tugraz.at/portal/watch/cc47fe98-c3b6-429c-bb0e-9960fe9d0fd9,"S06E00-Introduction, Learning Goals, and Objectives"
+https://tube.tugraz.at/portal/watch/0463afe8-62aa-482c-9452-40a31b58fb56,"S06E01-Introduction in Effort Estimation"
+https://tube.tugraz.at/portal/watch/011d8ce6-4f26-468c-9bf5-17e31ca5cb51,"S06E01-Exercise: Introduction in Effort Estimation"
+https://tube.tugraz.at/portal/watch/676a25c8-f4b6-46c3-b805-6292a99891fa,"S06E02-Size Effort Estimation of Engineering Processes Activities"
+https://tube.tugraz.at/portal/watch/942ba69a-239c-4158-86aa-7cf0b212f724,"S06E02-Exercise: Size Effort Estimation of Engineering Processes Activities"
+https://tube.tugraz.at/portal/watch/c3f04544-9590-45e3-a947-dd888581a15c,"S06E03-Detailed Effort Estimation of Engineering Processes Activities"
+https://tube.tugraz.at/portal/watch/e66062f9-b374-4d12-b80c-c2140d4b48eb,"S06E03-Exercise: Detailed Effort Estimation of Engineering Processes Activities"
+https://tube.tugraz.at/portal/watch/4ffbb3d6-8f5a-44a8-9e46-ef3c6887df17,"S06E04-Effort Estimation of Management Process Activities"
+https://tube.tugraz.at/portal/watch/e19ad2cc-9958-4e76-a727-a83bc4dcf733,"S06E04-Exercise: Effort Estimation of Management Process Activities"
+https://tube.tugraz.at/portal/watch/3ffbdf16-b0e9-43c0-ae6e-c67499cad4bd,"S06E05-Estimation of Project Costs and Costs for Founding a Start-up"
+https://tube.tugraz.at/portal/watch/ecdc314c-119e-4fed-8a8d-ee248ff515c3,"S06E05-Exercise: Estimation of Project Costs and Costs for Founding a Start-up"
+https://tube.tugraz.at/portal/watch/d6610343-d4e4-45e8-a703-93e664db5fbe,"S06E06-Software-specific Effort Estimation"
+https://tube.tugraz.at/portal/watch/f1a52987-0f9f-4a01-bfd8-d5086463716e,"S06E06-Exercise: Software-specific Effort Estimation"
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