Mishonov T.M.Petkov E.G.Mihailova N.Z.Stefanov A.A.Dimitrova I.M.Gourev V.N.Serafimov N.S.Danchev V.I.Varonov A.M.2024-07-102024-07-102024-07-102024-07-102018-08-291361-64040143-080710.1088/1361-6404/aad3d7SCOPUS_ID:85055646570https://rlib.uctm.edu/handle/123456789/496A 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 several days' pocket money budget. It is concluded that it is time such a practice should be included in 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 a criterion of dollar-per-accuracy for the electron charge q e measurement, this is definitely the world's best educational experiment. An industrial replica can easily be sold across the globe.enArticle