  A simple experiment for the electron charge $q_e$ measurement is described.
The experimental set-up contains standard electronic equipment only and can be
built in every high-school lab all around the world with pocket money budget
for several days. It is concluded that it is time such a practice to be
included in the regular high-school education. The achieved 13\% accuracy is
comparable to the best student university labs. The measurement is based on
Schottky noise generated by a photodiode. Using the criterion dollar per
accuracy for the electron charge $q_e$ measurement, this definitely is the
world's best educational experiment. An industrial replica can be easily sold
across the globe.
