  International Masterclasses are events for high school students that enable
them to act as "particle physicists for day" by analyzing authentic data from
particle physics experiments under the tutelage of scientists. International
Masterclasses have been very successful and have grown with their focus on data
from the Large Hadron Collider at CERN. Recent developments that bring
masterclasses to more students in more ways have been very exciting. The number
of masterclasses and the number of countries with masterclasses have grown
substantially. Outreach efforts such as masterclass workshops in developing
countries, particularly in collaboration with the African School of Fundamental
Physics and Applications, and a new International Day of Girls and Women in
Science masterclass have yielded success. Most recently, there are new
initiatives to expand masterclasses beyond the LHC, particularly into neutrino
physics.
